Mercedes-Benz S-Class S 550 For Sale. SIGNALS FROM THE AFFECTED SENSORS MEASURING THE ACCELERATION MAY NOT BE ACCURATELY TRANSMITTED TO THE ENGINE CONTROL UNIT. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. 2007 Mercedes-Benz S550 Problems and Complaints - 9 Issues - RepairPal.com Plannig to buy one this winter and woud like some info on these "expensive " problms up front. From the February 2006 issue of Car and Driver. A faulty contact inside, sometimes you can smack the control unit to get it to restart. Repairs were estimated years ago at 4000 dollar. Why do you love writing about cars? The only timing chain related issue with these engines was the balance shaft issue, not the timing chain, and that was up to a certain serial number, that ended in 2006-2007. Inverter Converter Assembly Hybrid Only, Mercedes-Benz Check / Test Battery Voltage with Multimeter, Replace Back Up Fog Light Bulb Mercedes-Benz 20142020 X156, Mercedes Wont Move When Placed in Drive Reverse, Mercedes-Benz ABC (Active Body Control) Bleed Procedure Rodeo Test, Mercedes-Benz Exhaust Back Pressure Sensor B60 Replacement, Mercedes-Benz Trunk Wont Close, Lock or Shut, From Dealer Quotes to DIY Hero: Carlos Alvarezs Inspiring Car Repair Journey, DIY Repair Success: How a Teenager in New Zealand Saved Thousands, How a Rear Level Sensor Failure in My Mercedes-Benz W221 S-Class Almost Ruined My Drive. The entire manifold must be replaced at $2000. The current W223 is not being offered in an S550 variant.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[728,90],'luxurycarsa2z_com-box-3','ezslot_4',104,'0','0'])};__ez_fad_position('div-gpt-ad-luxurycarsa2z_com-box-3-0'); The first-gen 2007 S550 offers a 4.7L V8 which is relatively reliable, but the W221 S550 is known for having auxiliary battery issues, air suspension issues, and transmission electronics issues. Engine cam plug at rear of cylinder head leaking. Front vehicle photos 1986-2018 Autodata, Inc. dba Chrome Data. For decades, the Mercedes-Benz S-Class sedan has reigned as a supreme icon of luxury motoring. Dealer still hasnt corrected this one either. And nowhere. These repairs are generally expensive, with each repair ranging between $700 and $1500. Remember that any problem with the S-Class will be expensive to fix if you depend on a mechanic or Mercedes-Benz dealer. The manufacturer was not notified of the failure. US $738. And what can go wrong? Happens after the brakes/rotors have heated up. In the past, Mercedes expended a moderate load of warm air hyping its SOHC three-valve-per-cylinder V-8s but now has fast-forwarded to the world of twin-cam four-valvers, with superlative results. M272/273 MB Medic, Diagnostic Tool Terms and General Glossary. Why You Should Avoid The 2007 Mercedes-Benz S550 - HotCars MERCEDES BENZ IS RECALLING 4,564 MY 2001-2006 CL-CLASS (MODEL 215), MY 2002-2006 S-CLASS (MODEL 220), MY 2003-2007 SL-CLASS (MODEL 230), MY 2007-2008 CL-CLASS (MODEL 216), AND MY 2007 S-CLASS (MODEL 221)PASSENGER VEHICLES EQUIPPED WITH ACTIVE BODY CONTROL (ABC) ACCELERATION SENSORS ON THE FRONT STRUTS. Ask the average schmo on the street to name the most famous, and he might say, "McCambridge," or he might say, "Gullwing," but he'll probably say, "S-class." I used the insurance money and purchased a second car, identical to the first. Three fundamental things can happen including bad fuel mix, lack of sparkor lack of compression . THE RECALL BEGAN ON SEPTEMBER 22, 2008. This is unbelieveable and I am loosing my patience with MB. We participate in the Amazon, Advance Auto Parts, eBayaffiliate programs and may earn a commission when you purchase using links on this site. It corners and stops like a sports car. Follow these steps (courtesy of Hoover at Jalopnik) as soon as you get your new/used 2007 S500: The guys at the dealership should be able to help you with this process if you cant. Someone said something about recalls. VEHICLE TYPEfront-engine, rear-wheel-drive, 5-passenger, 4-door sedan, PRICE AS TESTED$104,175 (base price: $86,175), ENGINE TYPEDOHC 32-valve V-8, aluminum block and heads, port fuel injectionDisplacement: 333 in3, 5461 cm3 Power: 382 hp @ 6000 rpmTorque: 391 lb-ft @ 2800 rpm, CHASSISSuspension (F/R): multilink/multilinkBrakes (F/R): 13.8-in vented disc/12.6-in vented discTires: Continental ContiTouringContact, 255/45R-18 99H M+S, DIMENSIONSWheelbase: 124.6 in Length: 205.0 in Width: 83.3 in Height: 58.0 in Passenger volume: 106 ft3 Trunk volume: 20 ft3 Curb weight: 4688 lb, C/D TEST RESULTS60 mph: 5.3 sec100 mph: 13.2 sec130 mph: 23.4 secRolling start, 560 mph: 5.7 secTop gear, 3050 mph: 2.9 secTop gear, 5070 mph: 3.6 sec1/4 mile: 13.7 sec @ 102 mphTop speed (governor limited): 132 mphBraking, 700 mph: 172 ftRoadholding, 300-ft-dia skidpad: 0.85 g, EPA FUEL ECONOMYCombined/city/highway: 18/16/24 mpg, .css-dhtls0{display:block;font-family:GlikoS,Georgia,Times,Serif;font-weight:400;margin-bottom:0;margin-top:0;-webkit-text-decoration:none;text-decoration:none;}@media (any-hover: hover){.css-dhtls0:hover{color:link-hover;}}@media(max-width: 48rem){.css-dhtls0{font-size:1.125rem;line-height:1.2;}}@media(min-width: 48rem){.css-dhtls0{font-size:1.25rem;line-height:1.2;}}@media(min-width: 61.25rem){.css-dhtls0{font-size:1.375rem;line-height:1.2;}}Tested: 1980 Pontiac Firebird Turbo Trans Am, Watch Out Casey Jones: We Drive a Locomotive, 1974 Datsun 260Z Tested: Improving on a Winner, 1975 AMC Pacer Tested: A Fresh-Faced Novelty, 1984 Audi 4000S Quattro: Put Your Mind at Ease, From the Archive: 1985 Chrysler LeBaron GTS Turbo, 1985 Sports-Car Comparison: A Potent Melting Pot, 1988 Eagle Premier ES: A Pleasant Surprise. Or are they as expensive? This is not only a problem for the W221 as it is a problem with the 722.9 transmission which is fitted to many models of Benz. I stopped at the light and when it turned green, I took my foot off the brakes and pressed the accelerator, but there was to response to pressing the accelerator. For more than 50 years, S-class Benzes have been the most succulent sausages in the Teutons' tray of vehicular sauerkraut. While driving 10 mph, the engine stalled and the vehicle failed to restart. 2008 Mercedes-Benz S550 Problems and Complaints - 9 Issues - RepairPal.com The W222 S-Class is considered to be one of the best S-Class models of all time and it still looks and feels brand-new, especially the post-facelift model. Table 1. Common Problems Mercedes-Benz 2006-2013 W221 Mercedes-Benz S-Class S 600 For Sale. A VARIATION IN THE TRANSMITTED VALUES BETWEEN AFFECTED AND UNAFFECTED SENSORS CAN RESULT IN ONE FRONT STRUT ADJUSTING TO A VALUE INDICATING BODY MOVEMENT WHILE ANOTHER STRUT DOES NOT ADJUST PRESENTING THE DRIVER WITH AN UNEVEN FRONT SUSPENSION. After doing further investigation I find out that MB sent out bulletins to their dealers regarding a problem as described to me. For the problem I had I do not think they will do anything about it unless the check engine light comes on and codes 1200 and 1208 appear. The W221 S-Class has two batteries. Over the years, the series has come to embody the best of what the marquee has to offer in terms of performance, luxury, and technology. I'm waiting to see what corporate MB is going to do for me. The amplifier is what does all the heavy work of running the COMAND. #2. Are there preventative maintenance options? You will get digital access to reviews and ratings for over 8,500 products and services The lineup now comprises the S550 tested here, whose $86,175 base price is actually $1650 shy of its S500 forebear's, followed in April by a 510-horse V-12 S600, with a sticker close to $130,000. Engine locked up and died while going down the highway! It's somethinggrander, like somewhere on it in tasteful chrome there should be a NASA badge. Csaba Csere. This prediction is based on Mercedes-Benz's brand. CarComplaints.com is an online automotive complaint resource that uses graphs to show automotive defect patterns, based on complaint data submitted by visitors to the site. Unfortunately, it is a widespread problem affecting virtually all S400 vehicles as they age. View all 48 consumer vehicle reviews for the Used 2007 Mercedes-Benz S-Class S550 4dr Sedan (5.5L 8cyl 7A) on Edmunds, or submit your own review of the 2007 S-Class. Your username maybe be your email address. also when i tried to put in coolant. Is the S550 the best Mercedes S-Class variant? BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. Used 2007 Mercedes-Benz S-Class Consumer Reviews sample size to provide results of statistical confidence. For more information on how we collect and use this information, please review our Privacy Policy. Wed probably never have known what hit us, save for the class action suit over safety issues related to the m272 and m273 engines. Don't be swayed by its alluring demeanor, the 2007 Mercedes S550 is best avoided. Perhaps I'm put off by the overly styled sheetmetal, which lacks the grace of its predecessor. The window regulator is the mechanism that moves the window up and down. S550 High Mileage club, who's in it??? - Mercedes-Benz Forum This was again resolved with me parking the vehicle, turning it off and then restarting it. The full-size sedan segment is characterized by the S-Class, but Audi does make the lovely A8 and BMW makes the equally lovely BMW 7-Series. They are telling me the car needs a timing chain gear sprocket and possibly a timing chain. The 2007 model marked the official arrival of the all-new S-Class series in North America, and it had the bells and whistles to challenge market rivals. Understanding the Central Gateway Control Unit in a Mercedes - YOUCANIC OWNERS MAY CONTACT MERCEDES-BENZ AT 1-800-367-6372. Its got Mercs superior and intuitive COMAND (short for Cockpit Management and Data) system interface that brings the audio, telematics, and telecommunications functions under a single knob on the center console and a display screen in the center dash. Corrected by dealer. Fuel Economy. Check these troubleshooting and repair guides for more help on your Mercedes-Benz. One has 146K miles, one has 130K and the other has 93K. Engine check light comes on while driving on the road. Mercedes M273 5.5/4.7L Engine Specs, Problems & Reliability Contact Us Or are they as expensive? After not getting credit for his work on Auto Quarterly, Philip is now convinced that ghostwriting sucks. 3 Great Deals out of 40 listings starting at $6,900. Some 2007 Mercedes S550 may experience failing catalytic converters, excessive oil consumption,electrical connector problems, failed mass air flow sensors, and in some cases the engines may need some major mechanical repairs, even complete engine replacement! But its engine is within the range that is prone to the timing chain issue. if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[728,90],'luxurycarsa2z_com-box-2','ezslot_6',103,'0','0'])};__ez_fad_position('div-gpt-ad-luxurycarsa2z_com-box-2-0');The Mercedes S-Class is a flagship full-size sedan from Mercedes that aims to satisfy those who want the most luxurious limousine that is equally impressive to drive and to be driven in. It is also eco-friendly, efficient, and fun to drive. Is there a recall number I should reference? Gentlemen: Have several questions re-the 07-550. But what happens if you fail to address the issue promptly? On top of that, there is also a separate external air pump for the bladders in the trunk. 64 Great Deals out of 800 listings starting at $5,500. This tradition continued with this iteration of the flagship sedan. They did the repair so they should correct it at their cost, stick to your guns. What then do we recommend to stubborn S500 enthusiasts who probably still want this car? Mercedes-Benz S550 Won't Start - RepairPal.com Mercedes-Benz Sedan / Coupe / Wagon Forums. Even though it is such a complex luxury sedan, it is one of the most reliable S-class Mercedes-Benz in the last couple of decades. Steve Spence, BMW started the revolution with its iDrive single-knob control system, and others have tried their own approach. 139700 mi. Instead, they allow the warranty to expire and allow the consumer to pay for the bill. The complaints are organized into groups with data published by vehicle, vehicle component, and specific problem. The door modulesare the brains that control the window operation. During that time, I had six visits and $5000+ in repairs, before a freak flood totaled the car. The dealer was unable to diagnose the failure, but kept the vehicle for further observation. VARIATIONS IN THE SOLDERING PROCESS RESULTED IN SOLDERING POINTS ON THE BOARD OF THE ABC SENSORS WHICH MAY NOT BE WITHIN DESIGN TOLERANCES. I went from bad to good to worst. Curious how the 2007 S550 compares to other years? Shoot for later models, making sure they don't fall in the affected engine serial numbers, Mercedes fixed the problem in subsequent models following the class action suit. The 2007 S-500 is not all bad until you look up her skirt. I could not believe my ears what I was being told. Really. Because the W221 has an electronic transmission shifter, it is also used to put the vehicle in Park if the main battery fails. 382 @ 6000 RPM. They talk about how to repair it but the dealer said if the car is out of warranty were on our own. they have an internal memo with a list of VIN numbers that have the faulty idler gear that wears out prematurely but won't recall the product because it usually wears out just after warrantee period! Either way, its no good for your wallet and mental health. The most common problems with Mercedes-Benz S-Class W221 (S350, S400, S550) are the transmission valve body, air suspension compressor, suspension airbag, and amplifier. The car is in good condition. Thanks, EJ Mercedes-Benz S550 Vehicles With This Problem - RepairPal.com Once I proved what other dealers where charging, they made an excuse and gave me the part at the rate that the other dealership was charging. Please don't spill Champagne in the Mercedes. Example: "Bad Brakes", "Toyota Recall", etc. From the Archive: Where else can you get the Aktion Gesunder Rcken's seal of approval? Mercedes vs Range Rover Torque. California consumers may exercise their CCPA rights here. OWNERS MAY CONTACT MERCEDES-BENZ AT 1-800-367-6372. Problems of 2007 Mercedes S550 Engine - CARLEG When the blower fan starts working intermittently, it is time to get the vehicle checked. Or more dashboard buttons? For a better experience, please enable JavaScript in your browser before proceeding. We use cookies to analyze & improve your experience, & to personalize content and ads. Related: Mercedes-Benz S-Class Gets Meaner Looks And 500 HP From Brabus. We don't sell/share your email. If you feel you have received this message in error, please view our customer care The payment for your account couldn't be processed or you've canceled your account with us. If you wish to listen to weak stations, prepare to start all over again.). Tested: 2007 Mercedes-Benz S550 - Car and Driver Its suspension smothers bumps. Tilt the mouse forward to get to the top of the computer screen's main menu. The pre-facelift W221 used a faulty transmission control unit which was known to fail and so did the conductor plate and the control unit.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'luxurycarsa2z_com-leader-1','ezslot_12',110,'0','0'])};__ez_fad_position('div-gpt-ad-luxurycarsa2z_com-leader-1-0'); This problem usually results in the car being placed in a limp mode which means that the car is able to drive up to speeds of a few miles per hour. Thats a disaster waiting to happen because the teeth can rot and fall out. The lineup now comprises the S550 tested here, whose $86,175 base price is . There are four drains on the regular sunroof, but if you dont want to remove the headliner, you will be able to access only the front drains, so occasionally carefully clean them with some fish tape or edge trimmer line. The second most common problem is related to the vehicle's engine and engine cooling (2 problems). 2007 Mercedes-Benz S550. The contact owns a 2007 Mercedes-Benz S550. Mercedes-Benz S550 Symptoms Mercedes-Benz S550 Windshield Wipers Not Working Mercedes-Benz S550 Car Leaking Oil Mercedes-Benz S550 AC Is Not Working Mercedes-Benz S550 Smells Like Gas Mercedes-Benz S550 Speedometer Is Not Working Mercedes-Benz S550 Makes Noise When Braking Related Model Symptoms Cadillac DeVille Won't Start "CarComplaints.com" , "Autobeef", "What's Wrong With YOUR Car?" California consumers may exercise their CCPA rights here. Once the Inverter Converter fails, the S-Class no longer starts. Team I'm also not taken with the synthetic feel in the major driving controls and the electronics-heavy interior. Mercedes vs BMW never disclosing that the car has been salvaged. The challenging part is accessing the rear level sensor mountedabove the rear axle. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! The failure mileage and VIN were not available. 54 Great Deals out of 778 listings starting at $6,950. Powered by consumers. Related: This Is Why The Mercedes-Benz S-Class Is In A League Of Its Own. With that said, we often see S550 with over 150,000 miles with original air suspension airbags. Stalling and rough idle could be a problem in some case while making a turn around corners. Mercedes has it right with its updated COMAND system; unlike BMWs infuriating and complicated iDrive, COMAND is simple to use. The contact owns a 2007 Mercedes-Benz S550. Philip Uwaoma, this bearded black male from Nigeria, has written more than two million words in articles published on various websites, including toylist.com, rehabaid.com, and autoquarterly.com. Some 2007 Mercedes S550s have enjoyed a good reputation for being durable, dependable vehicles. I am looking at a 2007 sl550 with 75000 miles. Possibly add more services and edges covered in fur? We don't sell/share your email. The NHTSA is the US gov't agency tasked with vehicle safety. 2006 Mercedes . When using synthetic oil in hot climates, flooding, difficult starting and loss of compression some Automobiles may suffer from poor lubrication . All work done at Mercedes Benz of South orlando. A number of companies specialize in reprogramming used TCUs, a service that is not offered by any Mercedes-Benz dealership. Youre probably in shock as your mind tries to reconcile the words Mercedes and avoid in one sentence. The W222 S-Class truly did set the standards for all the other Mercedes models down the food chain. Exactly where is the radio? The dealer has allowed me to purchase the extended MB warranty, but trying to talk myself out of it since the car has been reliable for me. they considered serious (because of cost, failure, safety, or downtime). A few owners complained that their W222 S550 makes grinding noises while steering and the issues were later pinpointed to the steering coupling and the rubber bellows.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'luxurycarsa2z_com-leader-3','ezslot_16',114,'0','0'])};__ez_fad_position('div-gpt-ad-luxurycarsa2z_com-leader-3-0'); Power-assisted steering is also known to sometimes cause issues and the car is likely going to flash a warning light on the dashboard if that is truly the case. I guess if anybody is in the market for a used S550 they should do their homework or face the possibility of being out of pocket 5K. Some 2007 Mercedes S550 may experience failing catalytic converters, excessive oil consumption,electrical connector problems, failed mass air flow sensors, and in some cases the engines may need some major mechanical repairs, even complete engine replacement! Mercedes-Benz S550 Review | The Truth About Cars Also, there is very little room to work, so you'd probably want to remove the bumper, grille, AC condensor and radiator. Then the newswire tingles with recalls from dealerships and class action suits. CUSTOMERS MAY CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY: 1-800-424-9153); OR GO TO HTTP://WWW.SAFERCAR.GOV. How reliable is the 2008 Mercedes-Benz S-Class? to help you make better choices for lifes big moments and the everyday ones in between. This new variable-valve-timing V-8 purrs out 382 horses at 6000 rpm but stockpiles all 391 pound-feet of its peak torque right there on the bottom shelf, ever accessible from 2800 to 4800 rpm. Took the car to the dealer and they told me that they would fix the car and they will deal with MB corporate so they go ahead and change the timing chain sprocket. 2007 Mercedes-Benz S550 Engine Problems Find something helpful? The most common problems with Mercedes-Benz S-Class W221 (S350, S400, S550) are the transmission valve body, air suspension compressor, suspension airbag, and amplifier. Just one little mistake and an otherwise fantastic product collapses like a pack of cards. Top 2007 Mercedes-Benz S550 Problems HVAC Blower Motor May Fail 74 people have reported this 30 Camshaft Adjuster Solenoid Failure 53 people have reported this 17 Engine Performance Problems Due to Crankshaft Position Sensor Failure 37 people have reported this 12 The Transmission Drive Selector Module May Fail 33 people have reported this 12 Dirty flaps could be stuck or create high loads on the plastic VIM actuator cam. DEALERS WILL INSPECT AND REPLACE, IF NECESSARY, THE FRONT ABC SENSORS IN ALL POTENTIALLY AFFECTED VEHICLES. 2007 Mercedes-Benz S550 Engine Problems | CarComplaints.com Speaking of the seats, it offers four different seat massage settings, the one feature that's enough to sell older executives who make up a good chunk of the S-Class's target customers. The compressor is located behind the front bumper and passenger side. Once the air compressor fails, it causes the vehicle to drop to the ground, and the warning message Stop Vehicle Too Low displays on the dashboard. Donate your old car in minutes through the CarTalk Vehicle Donation Program. Another common problem affecting the pre-facelift model (from 2007 to 2009) primarily concerns transmission electronics inside the 722.9 7-speed automatic transmissions. Get Help, Terms & Conditions Common problems of the 2012 Mercedes Benz S550. Not sure of the problem but this may be the cam 2007 Mercedes-Benz S550 106,566 mi, Visitor ENGINE LIGHT ON 2007 Mercedes-Benz S550 75,000 mi, Visitor The Definitive Guide To The Mercedes-Benz M272 And M273 Engine - Common Failure Symptoms and Diagnosis, Mercedes Benz balance shaft engine issues. A SOFTWARE CALIBRATION NUMBER (SCN) CODING RECEIVED ON THE AFFECTED VEHICLES DURING A RECENT WORKSHOP VISIT WAS INCORRECT. are trademarks of Autobeef LLC, All rights reserved. The Fora platform includes forum software by XenForo. See the Back button blue bar at the very top of the page to explore more. They're sumptuous without being saggy and offer 14-way "multicontour" adjustments that can even change the distance the cushion extends beneath your thighs, and there are optional multilevel fans blowing cold or hot winds up your keister, and there are side bolsters that suddenly stiffen in reaction to cornering forces, and there are center lumbar chambers that expand and contract to change your position twice per minute, and there's even a vigorous Magic Fingers option that feels like small pine logs rolling slowly down the sluiceway that is your spine. But what are some of the surprising facts about the Fiat 500? also the title i got says salvaged which i asked if there was anything wrong with the car and the car dealer told me no. 2007 sl550 engine issues? | Mercedes-Benz Forum And the big Mercedes is supremely quiet and comfortable. Fault Code Lookup The car rpms were increasing but the vehicle was crawling at less than 5mph. This is a molded gasket and is not field replaceable. We use cookies to analyze & improve your experience, & to personalize content and ads. He explains to me that when the timing cover was removed and replaced that the timing cover seal sits under the heads and he has seen it before where the head gaskets start leaking when the timing cover seal is removed and replaced and MB will not pay to RE and RE the heads when correcting the timing chain sprocket issue. The first one is used to power up the engine while the other is used to power all the interior electronics including the transmission. Timing chain issue at 75K miles with an M273? We may earn commission from links on this page, but we only recommend products we back. The part is challenging to find and is not available from any aftermarket parts supplier other than China suppliers. 2016-2022 YOUCANIC, a Bohotina LLC Company. DEALERS WILL RECODE THE SCN FREE OF CHARGE. Rushit Hila, an ASE-certified engineer (G1 Automotive Maintenance and Repair), brings over two decades of hands-on experience in the automotive world to his writing. Anyone know the vin #s affected,and or how do you find out about recalls on these kind of problems? On that note, I caught my local dealership attempting to overcharge me on a part by $400. THE RADIAL KNUCKLE FLAW MAY OCCUR AFTER SIGNIFICANT MILEAGE ACCUMULATION COMBINED WITH EXPOSURE TO HIGH CONTINUOUS STRESS BY DRIVING ON ROUGH ROADS. Nonetheless, let's dig in. What is the general cost of this fix? The contact called the dealer and was advised to tow the vehicle to the shop. Get answers and make your voice heard! These repairs are generally expensive, with each repair ranging between $700 and $1500. This led to me pulling over and parking the vehicle and turning it off. We hope you find the Common Problems Mercedes-Benz 2006-2013 W221 guide helpful. There are eight involving the radio, which I am afraid of since I can't find the on switch. S-Class COMAND uses a fiber optic loop to connect components such as radio, navigation, and CD changer. Advised by service advisor need to replace me control unit(ECM), costing $2,000.82. My 2007 Mercedes Benz S550 routinely will not start few days The engine is as smooth as a poetry major on Ambienmore than once we tried to start the bugger while it was running. Is it time to move on? It is not a complex repair, and if you decide to replace it, plan for up to two hours. JavaScript is disabled. "CarComplaints.com" , "Autobeef", "What's Wrong With YOUR Car?" We don't sell/share your email. Bump the S550 problem graphs up another notch. to get the information you were looking for! The pre-facelift W221 is generally not as reliable as the post-facelift version and the 722.9 7-speed automatic gearbox is a perfect example. 2012 Mercedes Benz S550 - problems, statistics, and analysis Warranty runs out in June. But it does strike us as risky to force the average S-class owner--he is, after all, 61 years old--to corral the cognitive courage necessary to wend his way, via an aluminum mouse, through approximately as many computer programs as are required to launch an ICBM from the USS Alaska.
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