Search found 16492 matches

by kevm14
Sun Jun 28, 2026 9:49 am
Forum: Powertrain
Topic: 08 Mercedes C300 4Matic: replace coil
Replies: 1
Views: 33

08 Mercedes C300 4Matic: replace coil

Going to replace the #6 coil with OEM. Also replace the air box seal as well as the missing wire retaining clip for the airbox.

I promised 20 minutes but we'll see.

I do have a broader work plan so let my organize my thoughts:
- Check generic OBD2 codes. Looking for maybe a history code for coil ...
by kevm14
Sat Jun 27, 2026 4:34 pm
Forum: Chassis / Brakes
Topic: 14 E63S: forged wheel search
Replies: 13
Views: 11886

Re: 14 E63S: forged wheel search

Unfortunately the dealer says the wheels are just no longer available. Here I was dragging my feet due to the cost but I can't even buy them from the dealer. Damn. So now I will be forced to act on an eBay ad for used wheels and then deal with any refurbishment they may require. This sucks.
by kevm14
Sat Jun 27, 2026 4:30 pm
Forum: Car lounge
Topic: W221 S550 hunt
Replies: 89
Views: 62078

Re: W221 S550 hunt


It's not clear if there is a single P/N to order the entire mirror assembly. My experience is EPC is difficult with that but the online parts catalog that they have at the dealer now will often show a new P/N that orders the entire thing, so I could call and ask. Or ask when I pick up the M272 ...
by kevm14
Sat Jun 27, 2026 12:03 pm
Forum: Powertrain
Topic: 2017 GLS550 Turbo A Underboost CEL
Replies: 110
Views: 11366

Re: 2017 GLS550 Turbo A Underboost CEL


There's a blank spot on the radiator support plastic cover that I think is where the label was supposed to be. There's no sticker there now.


Those can be ordered. In my case it was $16.


Here you go.
20260627_130237.jpg

https://www.mercedesbenzpartsshop.com/oem-parts/mercedes-benz ...
by kevm14
Fri Jun 26, 2026 9:17 am
Forum: Powertrain
Topic: 2017 GLS550 Turbo A Underboost CEL
Replies: 110
Views: 11366

Re: 2017 GLS550 Turbo A Underboost CEL

How does it drive, specifically under boost and transitioning in and out of boost?
by kevm14
Fri Jun 26, 2026 8:48 am
Forum: Powertrain
Topic: 2017 GLS550 Turbo A Underboost CEL
Replies: 110
Views: 11366

Re: 2017 GLS550 Turbo A Underboost CEL

Those can be ordered. In my case it was $16.

viewtopic.php?p=24690#p24690

There was a place in EPC to view the labels.
by kevm14
Fri Jun 26, 2026 5:08 am
Forum: Powertrain
Topic: 2017 GLS550 Turbo A Underboost CEL
Replies: 110
Views: 11366

Re: 2017 GLS550 Turbo A Underboost CEL

Wasn't there a sticker under the hood somewhere for refrigerant capacity? I'd also double check that it's r134a....
by kevm14
Thu Jun 25, 2026 3:24 pm
Forum: Powertrain
Topic: 2017 GLS550 Turbo A Underboost CEL
Replies: 110
Views: 11366

Re: 2017 GLS550 Turbo A Underboost CEL

A lot of suspension bolts want to be very tight. In fact so tight that the alignment guy didn't tighten them on my E63 enough at my local shop (before I went to the dealer) and I had to tighten them myself because the lower control arm was moving under load and making an unsettling clunk. Then there ...
by kevm14
Thu Jun 25, 2026 12:41 pm
Forum: Powertrain
Topic: 2017 GLS550 Turbo A Underboost CEL
Replies: 110
Views: 11366

Re: 2017 GLS550 Turbo A Underboost CEL

Usually non-steel bolts are one-time use (in the Mercedes world). There wasn't a note in WIS?
by kevm14
Wed Jun 24, 2026 5:12 pm
Forum: Car lounge
Topic: W221 S550 hunt
Replies: 89
Views: 62078

Re: W221 S550 hunt


The only current code is for the dead pass door mirror heater, which has been like this the entire time I've had the car. I should pop some new glass in there and hopefully solve that.


The power folding also gets stuck sometimes and got stuck today worse than it ever has. Had to drive around at ...