Defective E53?
Thread Starter
Junior Member
Joined: Jun 2020
Posts: 17
Likes: 4
From: MD
2020 E53, 2019 G63
Defective E53?
I got my E53 coupe back in May and was loving it, until one day, the CEL came on and the car stopped giving the engine any turbo boost... I was making 200HP at most. I pulled over, restarted, everything was normal. Happened a few weeks after, same thing, became normal again. I took my car in to the dealer the next day to diagnose. The dealer said that there was a blown fuse that was causing the relays to mess up. I took the car back, exhaust won’t pop or crackle no matter what, and a week later, the problem happened again. Verified there are no blown fuses. Restarted engine, everything’s fine, hours later same issue again! Ran the codes and saw P0234 (overboost). Not sure what’s going on but I’m taking it in again. Needless to say, disappointing that a 5000< mile car is already giving me trouble and requiring a second attempt to repair the same issue. Any input or similar experiences? There should be a video of it I took attached below
EDIT: Here’s a dropbox link with the videos
https://www.dropbox.com/sh/nov95pb0adtlaer/AAAI1NGHMjZ0E6Q2FPQJ5LLKa?dl=0
EDIT: Here’s a dropbox link with the videos
https://www.dropbox.com/sh/nov95pb0adtlaer/AAAI1NGHMjZ0E6Q2FPQJ5LLKa?dl=0
Junior Member
Joined: May 2016
Posts: 17
Likes: 4
2021 GLE63s
I've had mine in the shop for a week at around 2,000 kilometers and now it's at 7,000 and it's been at the dealer for a week. I got a few CELs that cleared out on their own but when bringing it in they have decided to replace my entire electric supercharger... My battery was overheating the first time around too.
Thread Starter
Junior Member
Joined: Jun 2020
Posts: 17
Likes: 4
From: MD
2020 E53, 2019 G63
I've had mine in the shop for a week at around 2,000 kilometers and now it's at 7,000 and it's been at the dealer for a week. I got a few CELs that cleared out on their own but when bringing it in they have decided to replace my entire electric supercharger... My battery was overheating the first time around too.
Thread Starter
Junior Member
Joined: Jun 2020
Posts: 17
Likes: 4
From: MD
2020 E53, 2019 G63
Just an update, the dealer replaced the wastegate actuator on the car and released it to me today... let's see if this solves the issue
They weren't sure what the cause was, but said the wastegate is a common failing point
They weren't sure what the cause was, but said the wastegate is a common failing point
