Skip the auto shop - Our mechanics make house calls

Q: The shift gets stuck when the car slows down

asked by on

Hello. I have transmission issues with my car that seem to occur when I'm in stop-and-go traffic. If I drive at the same speed constantly, I don't have problems. But, if I bring the car to a halt at a stop light for instance, the automatic shift gets stuck and won't change shift. Also, the dashboard lights come on and there is beeping. Then, if I shoot it off right away, it is fine. What could cause this? How can I fix it? Thank you.

The transmission shifter may be losing communication with the transmission control unit (TCU) causing intermittent communication problems. The system may need to have the transfer case reset after testing for codes. The reset will reset the communications and should fix the problem. Have a Mercedes scanner test the system and look for possible codes. Then have the reprogram done.

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

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: Key stuck in ignition of 2001 Mercedes-Benz ML320

Hello. Most of the time, this is caused by a bad battery in the car. If the battery is low then this will occur. I typically start by checking the battery and doing a load test. If the battery is...

Q: Chime in car is annoyingly Too Loud - 2016 Chevrolet Volt CVT

The Chime Volume setting has two values, Normal and High. Check your settings to make sure it is in the Normal position. If that is still too loud for you, you might try putting some duct tape over the "door...

Q: Just clicks when the key is turned over

Most likely your alternator has quit working. I would expect to see the red battery light on the dash illuminate if this is the case. This based on the starter just clicking when you attempt to start the car. Another...

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...
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...