Drive to workshop without changing gear
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Mercedes Benz GL450
Drive to workshop without changing gear
2 day ago 2009 Mercedes Benz gl450 dashboard warning lights came on as "Drive to workshop without changing gear." I disconnected the negative terminal on the battery, now the sign has disappeared. The engine turns on and transmission goes on all gears. I don't know what is going on, Do you have any Ideas.
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NGL450 w/EORP, S550
Brace yourself, it'll be about $3-4000 at the dealer or $169 for the part plus $400 for third party coding and $5-600 in labor at an indy.
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Joined: Jan 2010
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NGL450 w/EORP, S550
2 day ago 2009 Mercedes Benz gl450 dashboard warning lights came on as "Drive to workshop without changing gear." I disconnected the negative terminal on the battery, now the sign has disappeared. The engine turns on and transmission goes on all gears. I don't know what is going on, Do you have any Ideas.
It's worth servicing NOW if it's been more than 40,000 miles since last time.
You may get away with this if it is the Vehicle Speed sensor on the valve body. The contactor plates in the assembly lose connectivity due to accumulated dirt and grit and throw this code.
If left unchecked the VSS then short circuits and youll need a new part, and that part coded to the car's VIN.
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From: Emmett, ID, USA
2007 GL450
When was the last time the trans was serviced?
It's worth servicing NOW if it's been more than 40,000 miles since last time.
You may get away with this if it is the Vehicle Speed sensor on the valve body. The contactor plates in the assembly lose connectivity due to accumulated dirt and grit and throw this code.
If left unchecked the VSS then short circuits and youll need a new part, and that part coded to the car's VIN.
It's worth servicing NOW if it's been more than 40,000 miles since last time.
You may get away with this if it is the Vehicle Speed sensor on the valve body. The contactor plates in the assembly lose connectivity due to accumulated dirt and grit and throw this code.
If left unchecked the VSS then short circuits and youll need a new part, and that part coded to the car's VIN.
It is generally recommended to do a simple fluid and filter change, rather than a full flush, because the latter can excessively dislodge clutch wear material. It is better to do such rehabilitation on a neglected transmission gradually.
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Joined: Apr 2011
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From: Denver
2005 ML500, 2011 E350 4M, 2012 GL550
Looking at the error message you are getting, to me it sounds like the ISM, (Intelligent Servo Module), which works between the tranny and the TCM, its attached to the transmission and has easy-ish access, you might need a new unit and programmed to the car.
I personally would not go to stealership route, a reputable indy on the MB brand would be your best bet.
Yes if the fluid hasn`t been changed for a long time, do it, it would not hurt.
I personally would not go to stealership route, a reputable indy on the MB brand would be your best bet.
Yes if the fluid hasn`t been changed for a long time, do it, it would not hurt.
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Mercedes gl450
I agree with the fluid/filter change and no flush. It's something that should be done anyway and could be a relatively inexpensive (compared to other suggestions) fix.
There are three very highly rated shops near me that are dedicated to high end luxury cars (of which Mercedes is the "Chevy" of the group) and all recommended against flushing. And these aren't the sort of shops that look to save anyone money.
There are three very highly rated shops near me that are dedicated to high end luxury cars (of which Mercedes is the "Chevy" of the group) and all recommended against flushing. And these aren't the sort of shops that look to save anyone money.
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From: Albuquerque
'10 CL550, '12 GL550
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NGL450 w/EORP, S550
That’s a really good site with a thorough explanation of what is very likely going on here.
Still, service tranny, if it hasn’t been.
Codes will tell you what’s going on, hopefully A80 related as it is much less invasive than an VSS failure.
Still, service tranny, if it hasn’t been.
Codes will tell you what’s going on, hopefully A80 related as it is much less invasive than an VSS failure.
