The transmission drive selector module may fail resulting in the loss of gear selection capability. This condition can leave the vehicle stranded, and will require replacement of the drive selector module.
Resources for the Repair and Maintenance of your 2010 Mercedes-Benz GL550
2010 Mercedes-Benz GL550
2010 Mercedes-Benz GL550 Problems
2010 Mercedes-Benz GL550 Questions and Answers
how to test if transmission control modulE is failed
how to replace it?
how much is it?
2010 Mercedes-Benz GL550 Reviews
This is a high-quality truck in all respects. Handles very well, good turning radius, comfortable, attractive inside and out. Expensive to run and repair but, I knew that up front. Although it is a luxury vehicle as opposed to a work vehicle, there is a ton of space with both 2nd and 3rd rows of seats down. It is a pleasure to drive.