2016 CLS Shooting Brake

[Paul Edgecombe]

Hi all, I recently bought a 2016 CLS220dD shooting brake.The car is great to drive apart from one very annoying problem.Occasionally after stopping at road junctions or lights the gearbox switches itself into manual and I cannot reselect auto without stopping the engine and restarting it.Because I am watching the road and not the dashboard it is not noticeable until I pull away and the engine screams it's nuts off in 1st gear.I can use the box in manual as normal but not switch it to auto.I wonder if anyone else has had this happen as Mercedes are stumped, they have had it in twice now and cannot replicate the problem and nothing shows on diagnostics. Cheers

 

[V6Matty]

Likely a software upgrade will sort the issue,
Welcome to the forum btw and lovely car the CLS SB

 

[A.J.]

As above, and welcome to the forum Paul, you have a beautiful car there. Hope the issues are soon resolved and you can enjoy the beast.

 

[John Laidlaw]

Welcome Paul

 

[Blobcat]

Hello and welcome

 

[Paul Edgecombe]

Thanks for the welcome guys. Forgot to mention the car has just had a B service and software upgrade so it's a real mystery. I even started to think I imagined it but it happened again the day after the service. When I talked to the Mercedes service guy about it he was looking at me like I was demented.

 

[EmilysDad]

How would you swap it back & forward from auto to manual anyway?
I know that I frequently end up doing the same high revs in 1st thing in my Smarts by knocking it down a gear on the flappy paddle as I approach traffic lights but then forget I'm in manual mode. Auto to manual on the flappy paddles in the ML uses a bit more electrickery though .... holding the 'up change' paddle will tell it to go back into auto.

 

[dry run]

As Above. Can you not just flick the up-gear paddle until it goes to "D"?

 

[Crispian]

Hello and welcome.

Your not inadvertently knocking the paddles are you,that will drop it into manual mode,it does on mine anyhow.

Stunning car,I would be in the same carriage if it wasn't for 2 large 4 legged friends.

 

[EmilysDad]

....

Your not inadvertently knocking the paddles are you,that will drop it into manual mode,it does on mine anyhow.

.....

It depends which paddle on my ML. If I use the down-shift paddle it'll stay in manual until I make it go into auto by holding the up-shift, if I use the up-shift though, the car will go back into auto itself a short time later. Using the 'M' button though will put it into manual permanently. (it took me a couple of weeks to work out what that button did )

 

[Paul Edgecombe]

On the last occasion I pulled up at traffic lights and pressed on the brake pedal to engage hold mode.I didn't touch the steering wheel until I pulled away and my fingers were well away from the paddles. It had switched all on it's own with no input from me.No matter what I do with the paddles I can not get it to switch back to auto without turning the ignition off and restarting. I also had the malady of the gearbox switching to auto when in manual when the Tiptronic system decides that you are in the wrong gear, I questioned this with Mercedes and they told me this is normal. I would normally only use the transmission in auto so this is a real problem to me.I also have a company car so the Mercedes isn't used very often.I have booked it into Mercedes for Tuesday and they are keeping it for a couple of days.The worst sort of problem is an intermitant one so I hope they can find it. I don't know if the car has this M button as I have not come across it yet, if it has then a bad contact on this could be the cause of the problem.Thanks for your input guys, it may just trigger a couple of ideas I can throw at Mercedes.

 

[Srdl]

Hi Paul and welcome to the forum. It might be worth posting the question in the “Engine, Drivetrain....” section in the hope that one of the technical people on here have an answer.

 

[Paul Edgecombe]

Hi, It has been sugested that I post this problem on this part of the forum. I have recently bought a 2016 CLS220D Shooting Brake and have an intermittant problem with the transmission. Occasionaly with no input from me it will switch from auto to manual all on it's own. This happens when the car is at a standstill with the brake hold on. When I pull away it is in manual and whilst I can change gear up and down ok on the paddles I cannot switch it back into auto. I have to stop the car and restart it , then it is alright again.This has now happened 4 times and Mercedes could not replicate the problem and no fault came up on the diagnostics. It has just had a B service, this has occured both before and after the service.

 

[Paul Edgecombe]

Hi Paul and welcome to the forum. It might be worth posting the question in the “Engine, Drivetrain....” section in the hope that one of the technical people on here have an answer.

Thanks Steve, Just done that.