Car Problem Reports

Mercedes-Benz GL450 Internal Component Failure May Cause Rough Shifting

Mercedes-Benz GL450 Problem
29 Reports
Me Too

Model Years Affected: 2007, 2008, 2009, 2010, 2012, 2013

Average Mileage: 64,909 mi (5,700 mi - 125,000 mi)


Vehicles equipped with a 7-speed automatic transmission may develop a rough shifting condition, most commonly going up from first to second gear and going down from third to second or second to first gear. Our technicians tell us this is due to an internal component failure. Mercedes has released updated parts; the transmission will need to be removed and disassembled to complete the necessary repairs.

  •  Rookie

    Have owned over 40 cars in my life from Australia, London, USA,, never have I experienced this concern in any car previously.
    Extremely dissappointed in the Mercedes GL 450 quality and technology, this is the 4th. mercedes vehicle, others were cars not SUV made in the USA., absolute rubbish.

    Cost to repair approx. $6,000.00 that's why it sits in my garage for 12 mths.. Most certainly never purchase a Mercedes Product again.

    VW's are better quality.

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  • Visitor, , 125,000 mi

    The transmission has been slipping since it was new, rolling back on hills like it was a manual. I have reported it since day one and they couldn't find anything wrong. It had a technical service bulletin on an electrical component outside the transmission performed in 2007 but nothing else. It now shutters, they say I need a new transmission and of course its long out of warranty. I've called mbusa and they don't want to hear about it because its out of warranty.

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  •  Rookie

    After I started my Mercedes GL450 and changed gear to drive, noticed roughness in driving. Pulled over and put the car in park and back into drive. This time it would not move. It seems it got stuck in nuetral mode with no indication what so ever on the dash board or anywhere.Had it towed to the dealer, they informed me that the automatic transmission pump is bad and they saw metal shaving in the transmission pan. The fix is to replace the transmission. They could not find the cause. They did aknowledge that there is an internal component failure. I called MercedesB USA, they informed me that they had no recall on transmission issues.
    How can I follow up on what you had stated that Mercedes released updated parts; the transmission will need to be removed and disassembled to complete the necessary repairs.

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  • Visitor, , 46,000 mi

    My 2007 GL 450 is having shifting problems, It either is stuck in gear or will not move, causing to restart the car to clear the problem. I had to take the car in to get a new sensor plate 1300.00 repair bill.

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  • Visitor, , 51,000 mi

    Transmission needs to be replaced (advised by dealer)

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  • Visitor, , 60,000 mi

    odd shifting in low gears at low speeds, only noticed when going up or down hills.

    have not taken the vehicle in to be checked out.

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  • rough shifting down and up in low gears

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  • Visitor, , 10,100 mi

    Low mileage but oil leak

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  • Visitor, , 109,000 mi

    Goes into second gear at start. Shifts down to d2 at times

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  • Visitor, , 78,500 mi

    same problem funny thing though I called mbusa they said they would pay for half of the transmission as a gift

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