Anyone on here have a Mercedes ML as one of their other cars …… Reason for asking the daughters ML 61 plate has developed a fault with the accelerator that Mercedes know that there is a problem but don't know how to fix it

When the car starts up it seems to hold back in first gear then without warning it shoots forward with a slingshot effect hence why the daughter has to drive and be ready to cover the brake.

The car has been in at the local Merc dealership all week and although they know the fault is there and they have even telephoned Mercedes Direct to enquire about it no-one seems to know how to fix it , they have done all the usual software upgrades and such , yet the car is still the same ….

So over this bank holiday weekend they asked if their technician manager could use the vehicle and take it home with him to see if he can pinpoint what the trouble is ….

Yeah thats just talk for 'we want to have a weekend thrashing it about for a laugh and come back next week to say nought is up' Mick

Im afraid without much ML experience the only condolence i can offer is that a fair few Disco 4 SDV6 8 Speeds are suffering the same issue. I highlighted it and got flamed for daring to insinuate that the SDv6 was slower to take off the line than my td6, which it was, but then others slowly came forward...

From other faults on other cars they could try swapping out the accelerator pedal, or if it was mine i would see about going for a proper remap locally as i would bet the hesitation could be removed as its a delay on the accelerator pedal in a lot of modern cars to make the acceleration smoother and less instant in all but their top sport models. Im guessing its a CDi unit as well like the 300 or 350?? FFRR MY06 facelift With TDV8 Alloys Zeros/ATR's
Mantec Sump Guard, Rigid Load liner, MY10 BT upgrade.

I'm guessing the ML is "fly by wire"? ie the pedal's not connected by a throttle cable, but a potentiometer that changes the voltage based on the pedal position. It's maybe a sensor? Got - 2017 SDV8 Autobiography in Loire Blue
Had- 2008 TDV8 Vogue SE in Java black
Had - 2007 S/C in Stornoway Grey

Well none of the Technicians know what the fault is so should have an answer back by tomorrow ….

In these days of dealers trying to save money, they probably won't want to swap anything until they get a positive diagnosis.
When I did my training, I was always taugh that when you couldn't find a fault, start by changing the most obvious thing and wait and see, then work towards the least likely.
Not doing anything won't fix it!  Got - 2017 SDV8 Autobiography in Loire Blue
Had- 2008 TDV8 Vogue SE in Java black
Had - 2007 S/C in Stornoway Grey

As i said they had to actually phone Mercedes and wait 24 hours for a reply to their question regarding this fault which they said seems to be specific to the ML models

I had similar on my Audi A5 would put it into drive and nothing then it would jolt or take off. They mentioned something about replacing a valve between gear selector and gearbox. Was fine after that. Present :2008 TDV8 HSE
Gone Audi A5 2.7TDI
Gone Discovery 3 HSE
Gone Mercedes CLK
Gone Range Rover 2.5 DSE

Saga continues called out Mercedes Assist last night , mechanic came out spent about 45 mins then told me he was getting the car recovered ...... As he thinks there is a problem with the automatic transmission .... And that the Mercedes dealership that fitted the new accelerator pedal last week had nothing to do with this recurring fault

So this morning recovery vehicle turns up takes it away ..... Anyone's guess when she will get it back tho , but at least they have given her a new Merc E 320 saloon to use ....

Gonna blag her keys and take it for a spin ....

Told you to get her a nice reliable Range Rover Supercharged Mick....

The daughter ain't keen on Range Rovers Gaz

Are you sure she's yours Mick ???????????????????????????? MY 2010 5.0 SC Galway green and sand interior!!
Have the Faultmate MSV2 Extreme to be tinkering with the settings etc. !!

The pool boy however likes his mercs....

Guessing its a 320d so should be good, find an empty car park, turn dsc/tcs off, slip it into triptronic and 1st and practice drifting

Seriously just get shut of it mick and tell her unless she pays for her own car she'll take an RR, better vfm as well IMO  FFRR MY06 facelift With TDV8 Alloys Zeros/ATR's
Mantec Sump Guard, Rigid Load liner, MY10 BT upgrade.