2007 Mercedes Benz GL450: stuck in gear or won't shift

Filed May 21, 2020 · Transmission · 142,000 miles · PA

My car battery died, roadside assistance jumped my car, mechanic replaced my batteries. The car started without problems, but then a message came up in my dashboard in red saying to drive the car to the workshop without shifting gears; after the mechanic checked the car and did some research he found that the intelligent servo module was bad; the card would not shift into gear. The vehicle was stationary with the engine running in the shop.

Filed Sep 6, 2017 · Acceleration, Transmission · 130,000 miles · MO

Tl* the contact owns a 2007 mercedes-benz gl450. While the vehicle was at a complete stop, it failed to shift gears without warning. The contact was able to pull the vehicle over, shut off and restart the vehicle, and then the gears operated correctly. The vehicle was taken to an independent mechanic where it was diagnosed that the vehicle went into limp mode and that the speed and pcu sensors failed and needed to be replaced. The vehicle was not repaired. The local dealer and manufacturer were not contacted. The failure mileage was approximately 130,000.

Filed Sep 12, 2013 · Transmission · 82,500 miles · IL

While driving on highway, transmission suddenly lost power and went into limp mode (neutral) even though the car was in d and the same thing happened on stop light, car lost the power and I had to accelerate car hard to make it move and still didn't move finally I had to restart it, restarting the car solved the problem but it would come back once you are on highway speed, this can seriously cause the accident as you cant change the lane as your vehicle losses the power and it slows down and couple of times the transmission made a loud boom sound causing the vehicle speed to slowed down in very short span of time, and if the driver behind my car has short distance he\she might end up hitting back of the vehicle, there was a silent mercedes service bulletin s-b-27.00/120 raised by mercedes date apr 8 2011 for changing the valve body conductor plate in 7 speed transmission, where as it should have been a recall for 2007-2008 model gl450 but mercedes got away with it. This is really a safety concern and hidden truth from customers. I would request you to please look into this issue and there are tons of other people on forums who had the same issues for these 2 year models some got the free fix as they was under warrant and some had to pay out of pocket, there were few instances where this conductor plate failed within 5-45000 miles.

Filed Jun 3, 2013 · Transmission · 80,000 miles · IL

I was driving at night on a local road when the transmission locked up and would not shift up a gear. I immediately got into the nearest plaza and put the car in park and turned off the engine. I then restarted the car and the transmission was shifting correctly and was not locking into a gear. This has happened to me twice already. It is a major safety concern as I could have been in an accident with the car behind me. I could have also damaged internal components in my SUV.

Filed May 14, 2013 · Transmission · 80,000 miles · MI · crash · 1 injury

Day before the incident, car would suddenly stick in gear, not shift up or down other than after turning it of. Researched this; seems to be a common problem with this model. Had no time to get it fixed that day, next day got involved in a side impact accident (other driver neglected stop sign) wanted to speed up to avoid collision, but car did not shift down or accelerate. Could not avoid collision. After body work, car would still have same shifting issue. Dealer found out was failing conductor plate and valve body of the transmission.

Filed Feb 5, 2013 · Transmission · 46,200 miles · WA

2007 gl 450 does not shift, pulled out in traffic and almost got hit, with small movement 5mph top speed. Stop at light on hill and transmission was stuck in neutral. Had to shut off engine to re engage took to dealer and they said it was the conductor plate sensor. Safety issue? I think so.