antony9732

I just purchased a 2019 GLE AMG 63s, love the car. I had an issue with it last night, I was prompted with Max. Speed 12 mph in the display, could not clear, no buttons on steering wheel worked. Mercedes 24hr service said it cannot be cleared remotely and has to be towed - which I did. Tech now says not error code are present. has anyone seen this error?

jaxslk

Is it related to off road mode? Or is it a part/sensor failure?

Could only find this:
https://www.mersuv.com/mbread-319.html

BlownV8

Most likely they hit the hill descent button.

antony9732

I was told it’s called ‘Limp Mode’. The vehicle sensed an issue and it drops down to 12 mph max so you can get it to a shop without Causing more damage

I was also told next time turn the car off wait 30 minutes if there is not a true issue it will reset and you can resume your drive without any issues

BlownV8

Then why did it go into limp mode? A vehicle doesn't just do that without a defect unless you pressed a button so what was your issue?

mikapen

That seems the most likely. It's the only thing I can think of other than car wash mode, that shows an actual speed. Which in the case of Hill descent, is 12 mph I think, downwardly adjustable with the cruise control stalk.

The only time I experienced limp mode was in a 2003 C-Class, and I think I saw "speed reduced." No "speed" shown.
And on my 167, when I went off track and broke/loosened an alignment bolt, but the message then was "do not exceed 50 mph."

What have others seen on a 166 that shows a specific speed?

BlownV8

The only time in any of the three I currently own and one that was totaled was the hill descent control.