Skip the auto shop - Our mechanics make house calls

Q: How do I activate the auto door lock for this model car?

asked by on

Had some work done on my vehicle and now my doors no longer lock automatically when i hit a certain speed.
My car has an automatic transmission.

The auto lock feature is one of a number of convenience features that are controlled by the body computer. Normally you should be able to enable or disable this feature by holding down the door lock switch in the console for ten seconds. If that doesn’t do the trick, you need to either go to the dealer or find someone with the Mercedes Benz SDS computer. If you contact YourMechanic, they can tell you if there is a technician with an SDS in your area. Using the SDS they can communicate with the body control module (AAM) and enable or disable any of the convenience features. Try the switch trick first.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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!

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: Misfire in engine

Hello. The most common cause of a misfire are the spark plugs. But there are times when the coil packs or spark plug wires can cause a misfire. If the car has a distributor cap and rotor, this may also...

Q: 2004 ML350 stalled, then stopped. There was a code P0335. Checked battery and it is okay. Replaced CPS, but still not running. Checked the plug and harness.

Hi there. The code P0335 could be on for a failed circuit in the Crankshaft position sensor harness. If the harness is good and has no issues, then the reluctor ring could be missing teeth or damaged causing an interruption...

Q: Door chime sensor randomly goes on and off especially during rough braking or on bumpy roads

On the door latch assemblies inside the door, there are door ajar switches that indicate whether a door is latched or not. Over time and use, these switches can go bad and the contacts do not stay in place causing...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.