I Johal

Transmission them went to 124 Celsius
The screen said to park car leave engine running to cool the transmission.

Anyone else have this issue?

bobblehead

https://mbworld.org/forums/w213-amg/...nsmission.html

post #23 was the fault.

Op needs to have the dealer to check if this is the cause

cyclrder

mine was caused by a faulty sensor... take it for service.

cajun1689

I had the same issue for a while they were saying I was leaking coolant but could not find the leak. Hasn’t done it in about 6 months so we will see

Senna.28

hi all,
Just would like to ask a simple yet important question that may be the reason my 2017 e63s transmission is overheating in comfort mode. I took my car to the dealer for a radiator grill protector recall. got the car back and noticed a little bit of smoke coming out of the engine. poped the hood and saw nothing major so didn't think anything of it.

After the next few days, drove it around and noticed the transmission is getting quite hot in normal traffic conditions. no hard loading or anything stress full for the car. got home inspected the radiators not a leak out of them. coolant bottle was full to the brim. I then took off the AMG engine cover and noticed there is a bottle with a coolant cap on it also. I opened it up and its extremly low.

Just wanted to ask is this an over flow of the main coolant bottle or a seperate system that maybe in charge of cooling the transmission? I checked on my friends e63s and his bottle is full so im hoping its just as simple as topping up.

Also car is no longer under warranty so I any remedy from Benz is going to cost me a limb at best.

Thanks in advance

Transmission over heating, Lack of coolant?

eirp

Unless you are comfortable DIY, I would drive straight to a competent indy mechanic and ask them to 1) check for any potential source of smoke (like an oil leak and by pressure testing each cooling circuit) and 2) bleed and top off _all_ cooling circuits. Apparently the circuit the trans cooler is on is notoriously hard to "burp" -- and might just have a few air pockets trapped inside.

A good indy shouldn't charge you an arm and a leg for the service, and it's better than waiting it out.

edit: since I dodged your actual question, the point is that if you are a bit low on coolant you need to figure out why. A small leak detectable only with pressure, or air from a prior service that required removing a coolant line/draining a circuit, could explain it.

kponti

And since you just had a radiator service done, you can top off the reservoir with the appropriate fluid to the level required, see if that helps your issue. Then drive for a couple of weeks to see if it goes low again
A lot simpler than draining everything to find a potentially phantom leak