[antnee]

VRS have a decent rep - certainly not a place that will wreck a car then bill the customer for it. It is probably a genuine issue which could normally be solved through a warranty claim, but due to being lowered they will probably tell you to do one. You could stick the original suspension and exhaust on, then ask Mercedes to look at it.

 

[Forrester]

Yes I have since also found out that VRS have a good reputation. It was probably some of the mods other than the exhaust which are the problem.

 

[Scottyp712]

Yes I have since also found out that VRS have a good reputation. It was probably some of the mods other than the exhaust which are the problem.

All mods been done there, I had a tdi tuning box on car for 3 months before the remap from vrs, maybe that did it, springs r h and r springs so everything I’ve done has been done with proper brands etc

 

[Forrester]

It's hard to know. I would be inclined to do what @antnee suggests. Restore everything and take to MB. The diff alone must be painfully expensive to sort out from a labour cost point of even more than any parts.

 

[Scottyp712]

It's hard to know. I would be inclined to do what @antnee suggests. Restore everything and take to MB. The diff alone must be painfully expensive to sort out from a labour cost point of even more than any parts.

so update
They’ve found one off a scrapped car and it £1000 so I’ve gone with it
Never done it before but they’ve tried everything to keep cost down

 

[MGL]

Let's hope that the used part is ok. Can they guarantee that?

 

[Chow Gar]

Good folks, if anyone else is getting this warning message on their dash, weirdly I think it may have something to do with worn out tyres and the slip that is being detected by the cars sensors. My fronts are currently around 4mm and my rears have just gone under 3mm and due to the amount of power the A35 puts down, I've noticed due to the tyre wear present, when the wheels struggle for grip, with my application of gas, I get this illumination. I've had my vehicle at the dealers before and also some technical guidance from Mercedes Me, who advised me that if there was any fault on the car, it would not just go away after pinging on the instruement cluster display. This is fairly evident, as a year ago I kept on getting a "front right window bag fault" and this remained on my display until it was fixed at the dealers.

To be quite fair, with the staggering amount of tech these cars have, I would expect a whole lot more faults than I've come to find in my 20 months of ownership thus far.

 

[Harry321]

Hi had this message come up on a35 not long had new dif and transfer case has anyone else had similar or same issue also car won’t get traction at any junction thanks in advance

 

[veeeight]

Sounds like your AWD ECU has a fault.

Best thing to do is to get a diagnostic and read of the error codes.

 

[Chow Gar]

I had this a couple of years ago and after Mercedes dealer diagnosed the fault, a new rear diff was fitted. This was at only 6,000 miles and no, I don't drive the car like a knob all the time...

 

[Bert]

So in a tight turn while accelarating strongly, I got the error message: 4MATIC INOPERATIVE.

At the next stoplight, from a standstill, I accelerated and the front wheel briefly spinned, as if 4MATIC was inoperative and I felt I also lost traction control.

Also, the traction control on/off button did not work.

I powered off the car and upon re-start, the 4MATIC error message was gone and the traction control on/off button was working.

Anyone had this issue on an AMG A35 and should I consider it an isolated case ?

 

[Forrester]

There is information on this thread. I won't move your post to it yet.

(26) A35 4matic message HELP | Mercedes A-Class Forum (aclassclub.co.uk)

 

[Bert]

Will take the car in the MB dealer for service.

But before, I just wanted to verify if the 4matic error would come back.

So I did what i rarely do, I used race start and as soon as the car was launched, it lost the rear wheel traction and the 4maqtic error message appeared.

I then went into the performance menu which confirmed only front wheels were operating.

The traction control on/off button also no longer worked.

Powered off the car and upon start-up, everything went back to normal....

 

[jesus.sterling]

that happened to me many time and i think that lead to my rear differntial to break so be carefull

 

[Forrester]

The A35 seems to have quite a weak 4 matic system. The first gen A45 was also weak but it had more power. MB should have done a better job.

 

[veeeight]

The most frequent causes of 4Matic Inop messages on the A35 is either the AWD ECU (connector, cable, ECU) or the rear diff pump.

NOT necessarily the diff failing.

Let’s not set hares running on false assumptions.

 

[Weegie]

Had this error message pop-up a few times and booked car into dealer as warranty period about to end.

Was advised it was a known software issue giving false errors and a software patch applied to correct.

 

[Forrester]

Good news. Let us know if it stays fixed.

 

[srea064]

Buggy software again 😳

 

[Atomzi95]

Will take the car in the MB dealer for service.

But before, I just wanted to verify if the 4matic error would come back.

So I did what i rarely do, I used race start and as soon as the car was launched, it lost the rear wheel traction and the 4maqtic error message appeared.

I then went into the performance menu which confirmed only front wheels were operating.

The traction control on/off button also no longer worked.

Powered off the car and upon start-up, everything went back to normal....

Bro hello can give me more information what mercedes dealers says
I have glb 35 amg 2021 and i have same problem as your. Identical!! 100%