Four problems related to vehicle speed control have been reported for the 2007 Mercedes Benz GL450. The most recently reported issues are listed below.
I was driving home from work and my transmission began to not shift out of third gear going up a hill. . I took it to the dealer after this happened another 10 times and they said is a intake flap not closing properly and that they couldn't do anything about it. Now its happening so often im afraid to put my children in the car on account that every time it stops shifting when I'm in the middle of traffic and lose all power.
Speed control became null during acceleration at 72 mph. During the time of acceleration, transmission made an odd sound then speedometer moved from 72 mph to 35 mph in just seconds and car would not go over 35 mph regardless of how much pressure was applied to the accelerator.
Vehicle will not change gear and become sluggish with terrible fuel consumption. Tried fuel treatment, problem gets better then return. The problem is intermittent.
1. Poor battery life and alternator life in 2007 gl 450 2. Engine died and electronics died at highway speeds, reported to Mercedes Benz corporation with no resolve. 3. Lift gate constantly malfunctions and does not close.
| Vehicle Speed Control problems | |
| Speed Sensor problems | |
| Cruise Control problems |