Skip the auto shop - Our mechanics make house calls

Q: Automatic rear hatch not latching.

asked by on

The rear hatch will come down when the close button is pushed, but it will not latch.

A: Hi, this comes up often on this vehicle. Me...

Hi, this comes up often on this vehicle. Mercedes has a technical bulletin for it since it is so common. The most common cause of it is from a programming issue with the rear SAM. This is a module that controls this system. In most cases it can be reprogrammed by the dealer and that will take care of it. There are also issues with the rear SAM failing internally and/or the rear safety release binding up keeping the latch from working. You can inspect the latch release to see if it is caught or seems to be binding, but if that looks fine you would need to have the dealer check this as they are typically the only ones with the right equipment to program the SAM.

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・Save up to 30%

Get a quote

What others are asking

Q: I have a loud squealing noise that is intermittent.

Hi, thanks for writing in. Usually, squealing noises are attributed to a loose belt somewhere on the vehicle, in which case, the serpentine belt could be the issue. However, since you're experiencing this only during the reverse gear, it could...

Q: gas hand works after reving to 4000 rpm

Fuel sensing units were a common replacement item with your Mercedes Benz ML320 and that generation ML. In fact, most Benz' of that era have the same issue. Here is something you can try: Turn the ignition to...


The trunk has two fuse panels one on left rear and one on right rear of trunk area. The one on the right has the fuel pump relay and fuse. The trunk door lock is in series with all the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...