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V8-5.5L

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Car cutting out when slowing down
This may be related to a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at...
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How much is steering wheel airbag? 2007 Mercedes S550
Hello - unfortunately, that is not a service YourMechanic can offer at this time. Thanks for thinking of us though!
Question
What is the steps I would take to replace the starter on this car?
Hi there. To replace the starter on your vehicle, perform the following steps: (1). Remove the negative battery cable (-) from the battery (2). Raise up the vehicle and put the vehicle on jack stands (3). Remove the power...
Question
Mercedes engine is trembling
Hello. Your issues may be related to the throttle actuator that was alarming in the first place. If they know for a fact the throttle system as a whole is perfect, the next step would be to look into the...
Question
Hazard lights will not go off
Hi there. Check the switch to the hazard lights and see if the switch got stuck. Sometimes the switch tends to stick and make the hazard lights stay on. If the switch is working, then the contacts in the switch...
Question
Shaking in steering wheel at 120/km
The most common reason for a vibration while driving is a tire issue. The tires may be out of balance, or just worn to the point that they will cause this. Typically, the brakes won't cause this, unless it happens...
Question
Are my locks causing my battery to over night?
This may be a sign of a failing voltage regulator or a failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine...
Question
My car fan runs on 2 speeds - can I replace the radiator fan resistor?
Hello - I believe this is normal behavior, and handles cooling the engine down appropriately (i.e. fan speed changing based on how hot the engine was when running) upon shutdown. There are problem cases where the radiator fan runs on...
Question
Transmission not operating correctly and stops working on when coming to a stop.
Hi there. The transmission drive selector module may have failed causing the transmission to not shift or go into gear. This is a common issue with the 2007 Mercedes-Benz vehicles. Check the wiring harness on the transmission to see if...
Question
Vibration from passenger side front wheel.
Occasionally, you will be able to measure enough play in the bearing that you can condemn it without further testing. You have to check the factory spec. to see what is allowed and will have to use a dial indicator....
Question
Rear battery isn't charging.
If you had the key on for an extended period of time without the engine running, you may have run the accessory battery down. It really should last longer than a car wash though, so maybe it needs replacing. Your...
Question
having issues with power seat moving forwards and backwards, does he fix that?
If your seat will not go forward or backward, it is very likely that your power seat motor has failed. The seats in your vehicle actually have three separate motors. One controls the headrest, one controls the recline function, and...
Question
I have a 2008 S550 and it just developed a problem that is unusual. During cold start ups it's fine, but after a little driving and shutting it off, it will not start up.
Hi there. The signs all point to the fuel pump. When the engine is started cold, the fuel is cold, but when the engine is started when the engine is warm, the fuel is warm. The fuel pump may be...
Question
Vehicle won't raise to riding height after rear right suspension bag change
You really can't do much with the Mercedes Air Suspension without the diagnostic computer.If the air suspension controller detected a big leak in the system, it may have shut off to keep the compressor from overheating. Or if you are...
Question
repair brake for E550 2008
A brake warning light can refer to fluid level, maintenance required, or other system fault. If the light is purely a maintenance reminder light, please note that brake pads are not replaced according to any fixed schedule, or number of...
Question
Radio "device unavailable"
I would recommend to look in your owner's manual for information relating to this matter. In the chapter about the radio unit, you will likely find information that will lead you to being able to reset your region back to...
Question
Any DIY service manuals available? 2007 Mercedes S550
Hello - except for the Mercedes factory Service Manual/DVDs, the usual sources of quality aftermarket service manuals (i.e. Bentley) are bare on this one. Haynes/Chiltons don't yet cover anything this new either, certainly not for S-class models. Your best bet...
Question
Vibration in drive shaft 2011 Mercedes S550
Hi there - there is a flexible coupling in the driveshaft that connects the transmission to the driveshaft called a "flex disk" or "guibo". This disk is essentially a rubber and fiber donut that flexes as it transmits power, and...
Question
Metal fragments in Transmission fluid
The reason they dropped the price by $2,000 (from $8,500) is because you can buy the entire transmission used (low miles, too) for about $1,000 to $2,000 using an on-line database such as Car-Part.com. Input your year, make and model...
Question
ESP stability control light is on.
Hi there. If the vehicle was jolted hard on the front end when the vehicle hit a pole, then the Electronic Stability Motor may have had a harsh force applied to it causing the motor to either fail or become...

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