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.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Hatchback goes too high up when opened

One way to limit the range of motion in the rear hatch for your Prius would be to use self-tapping screws, and bolt a ratchet strap-type strap of your desired length from the hatch, to the inner paneling of the...

Q: Nissan altima 2013 rear seat latch is broken and I cannot fold down the seat. How do I repair the broken seat latch? What should I

Hello, thank you for writing in. Correcting the issue will involve finding out what the exact issue is first. The latch has a handle that is pulled to release it. If the handle is broken, and you cannot release the...

Q: My clutch is not working Entire clutch repair or clutch master cylinder repair? How do I check the cylinder?

Hi there. Check the slave cylinder to the clutch and see if the piston is all the way out. If the piston is all the way out or its not touching the clutch fork, then the release bearing has broken...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...
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.