2007 Mercedes Benz GL450: sudden loss of power

Filed Oct 11, 2016 · Electrical, Transmission · 127,561 miles · CA

Tl* 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.

Filed Jan 16, 2014 · Acceleration, Engine · 79,000 miles · MD

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.

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 Feb 18, 2010 · Engine · 36,900 miles · MD

My 2007 mercedes-benz gl-450 with 36,900 miles suddenly lost power and was barely responsive while driving home yesterday (2/17/2010), and then the car required 3 or 4 attempts to shift into reverse as I was trying to back into my driveway. I drove the car to the mercedes dealership this morning. This problem first happened a few months ago (august 2009 at 34,500 miles) during highway driving with my family in the vehicle while we were out of town on a vacation trip. We had to repeatedly pull off the highway, turn the car off for awhile and then restart, to get the vehicle to have sufficient power to get home and to the mercedes dealership. At that time the mercedes dealership replaced a camshaft solenoid magnet. This problem is so dangerous that we have now lost confidence that we can safely take this vehicle on a vacation trip.

Filed Dec 31, 2009 · Electrical · AR

This complaint is in regards to a 2007 mercedes gl450. I have had electrical problems with this car from the very beginning. 14 days after purchasing vehicle went into the shop. On 2 occasions my car shut completely down on busy road ways and both times mercedes did not want to fix the car. Mercedes claimed a drink was spilt in the car on a computer system under the front passenger seat. On the first occasion lights started flashing and with in 30 seconds the car lost all power and had to be pushed off the road way. All of the doors were locked up we finally managed to climb out the drivers side. I had 3 kids in my car and the thought of not being able to get out of this car really concerns me. On the second occasion which was approximatly 2 weeks later the cars windows started rolling up and down and smoking. The car then shut down on us and at this point was smoking so bad my kids were coughing. The car then jumped out of park. Again the car was towed in the next day and mercedes said we spilt a drink in the car that shut it down. Mercedes refused to fix the car even though it was still under warranty. This car is not safe. I have done much research and have talked to several people who have had the same problems and have been told they spilt a drink and that is why it shut down. One man's car caught on fire in a driveway another's gl was parked in the garage and burnt his house down killing his animals. The list goes on and mercedes will not recall this model.

Filed Apr 22, 2009 · Brakes · 18,000 miles · CA

1. Made a left turn onto the roadway from a stop. 2. Had failure of the ABS, esp and parktronic systems of the vehicle. Steering wheel felt like there was a loss of power steering. 3. The vehicle was parked and started. This condition self corrected after starting the vehicle a second time. Have heard this is an issue with vehicles from other manufacturers as well.