Q: 2007 Mercedes-Benz S550 stalls and then turns itself off

asked by on

My car (108,000 mileage) stalled briefly before it independently restarted itself. This happened at various speeds when I was driving above 5 mph. It doesn’t happen constantly, only intermittently. There were no warning lights on at any time. I took it to the dealership several times, but they couldn’t fix the problem, nor find what was causing the problem. They had reset the system, but the car kept stalling and restarting on its own. Can you tell me what is causing this and how to fix it?

If you start the 2007 Mercedes-Benz S550 using the keyless go system and the vehicle is acting erratic, then it may be due to this module being erratic from the battery voltage dropping below a certain level and causing it to turn off and restart. The module may need to be reprogrammed to stop this from happening, but I would recommend having the battery and charging system checked to see if both are in perfect order. Also, replace any batteries in any and all remotes you use for the vehicle. This is a precaution that they do not have problems with low batteries. If you need help having this looked at, a certified professional from YourMechanic can come to your home or office to diagnose the stalling and restarting problem to determine what repairs are needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. 2007 Mercedes-Benz S550 stalls and then turns itself off

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Down one chamber

I owned a 300D and 300SD, both 1983's. You can have a bad glow plug or two even if the glow plug light is lighting when you turn the key on. The easiest way to determine if a glow plug...

Q: Car won't start due to bad battery

Hi there. If your car won't start, it could be the battery, but it could also be several other things. Often times a failed alternator can also cause a problem such as this, which means that the alternator will need...

Q: To check the transmission oil on my pontiac g6 do it has to be running, it dosent have a dipstick so i have to take out the bolt

You have to have the engine running on a lift or a flat surface before you take out the check plug or else the fluid will spill out. Then you can check the fluid level and put the plug back...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.