G Klasse Transmission Troubles Resolved

Whoa, sounds rough! I had a similar thing happen on my Mercedes, not a G Klasse but a C Class, a while back. Transmission issues are never fun. That grinding noise is particularly concerning. You mentioned a transmission oil pressure sensor fault – is it throwing a specific code? Low oil level can definitely cause pressure issues and trigger that sensor. Have you checked the fluid level? Also, how does the fluid look? Is it dark or burnt smelling? Could be a faulty pressure switch too. There are multiple pressure switches in these transmissions so it would be worth checking which one is faulty.

Okay, thanks for the insight! I haven't checked the fluid level yet, honestly. I'll do that first thing. When you say 'pressure switch', do you mean the same thing as the oil pressure sensor? And how would I figure out which switch is faulty?

Yeah, the pressure switch and oil pressure sensor are basically the same thing in this context. As for figuring out which one is faulty, that's where things get tricky without proper diagnostic tools. The error code you're getting should point you to the specific sensor, but sometimes it's vague. Honestly, at this point, I'd probably recommend taking it to a decent workshop. They can hook it up to a proper diagnostic system and pinpoint the exact problem. Could save you a lot of guesswork and potential damage.

Alright, I think you're right. I'll get it to a shop. Thanks for the help! Turns out it was the oil level. Topped it up and the error disappeared, shifting is normal again. Replaced the pressure switch for good measure. Cost me 365€, but worth it for the peace of mind.