Seven problems related to power train have been reported for the 2007 Mercedes Benz GL450. The most recently reported issues are listed below.
I was driving on the highway at 70 mph and the car will downshift and I could only go 40 mph no matter how hard I stepped on the gas. I had to pull over, turn the car off, wait ten minutes and then start it up again. Again this week it also happened.
Takata recall . My car have the air shocks completely down the air is escaping from 3 of them and the car looks and drive very bad ,also the turbine speed control sensor is failing since I purcfchase this vehicle, tha car stop moving forward every time igot to a stop ,and I have to turn the car off and then turn the car on in order to keep moving.
The contact owns a 2007 mercedes-benz Gl450. The contact stated that the vehicle experienced a complete loss of power while driving approximately 65 mph. The failure occurred without warning. The contact stated that the failure occurred four times. Additionally, the engine remained functional during two of the failures, but the vehicle could not shift into the correct gear. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 127,561.
Premature transmission up-shift and remains unresponsive to throttle position. Suspected transmission conductor plate/valve failure as previously mentioned by others for this model year. When will mb acknowledge this is a dangerous condition and issue a recall?.
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 withing 5-45000 miles.
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.
The contact owns a 2007 Mercedes Benz Gl450. While driving approximately 40 mph, the transmission seized and the vehicle abruptly came to a halt. The service engine warning indicator illuminated after the failure occurred. The vehicle was towed to an independent mechanic who stated that the defect was related to internal damage within the transmission. The vehicle was then towed to an authorized dealer for diagnosis. The dealer stated that the transmission would need to be replaced due to faulty cam shaft locking. The vehicle was being repaired. The manufacturer was made aware of the problem. The approximate failure mileage was 70,000.