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Re: 2017 GLS550 Turbo A Underboost CEL

Posted: Mon Dec 08, 2025 2:31 pm
by rpaoness
If it's a Xentry-only test, let me know if you have any time Sunday to check it out either here or I can bring it to your place - I have work through Friday and then a scout camping trip Fri-Sunday morning.

Re: 2017 GLS550 Turbo A Underboost CEL

Posted: Wed Apr 22, 2026 7:35 am
by rpaoness
Set the underboost code again this week. I'd say it's been 5 months since the last one, but it was out of service about 3 weeks due to coolant leak chasing and my lack of availability, and a full month with the deer hit/bumper replacement. So I guess it's only been like 3 months.

With 3 month intervals between setting the code I wonder if I should just let it ride.