2018 e63s wagon – loose gas cap / engine light
Junior Member
Joined: Jul 2024
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E63S
I had the same warning and it turned out to be purge valves AND a fuel pump that was not operating at full capacity.
Replaced both and code went, nothing to do with the gas cap in the end at all
Member
Joined: Jul 2021
Posts: 171
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From: Northern Virginia
2014 Jeep Grand Cherokee SRT (sold) 1993 Mazda RX7 (sold)
In either case, I might be able to make it in to the INDY for a scan. Thanks to all for the help/diagnosis.
Mike
Super Member
Joined: Mar 2009
Posts: 657
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From: Boston
2020 E63s Wagon, 2012 C63 AMG Coupe, 1989 560SL, 2023 911 Carrera T
Subbing to this, hope to hear back about your situation. Today my car showed a CEL, car seems to drive fine but planning to stop by my indy shop on monday for code scan. No gas cap swap in my case. Over the phone they suspected thermostat, we'll see. I'll report back as well, first "problem" with this car.
Member
Joined: Jul 2021
Posts: 171
Likes: 55
From: Northern Virginia
2014 Jeep Grand Cherokee SRT (sold) 1993 Mazda RX7 (sold)
Fixed (for now)
Well, INDY ran his scan tool and cleared the CEL. No real explanation/reasoning behind why this happened, but suggested that I drive the car a couple weeks to ensure CEL doesn't come back, and then maybe try the AMG fuel cap again.
Guess we'll see.
Mike
Guess we'll see.
Mike
Out Of Control!!
Joined: Jun 2004
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
Member
Joined: Jul 2021
Posts: 171
Likes: 55
From: Northern Virginia
2014 Jeep Grand Cherokee SRT (sold) 1993 Mazda RX7 (sold)
I'm going to have to chalk this one up to idiocy.
Mike
Super Member
Joined: Mar 2009
Posts: 657
Likes: 119
From: Boston
2020 E63s Wagon, 2012 C63 AMG Coupe, 1989 560SL, 2023 911 Carrera T
Reporting back, my CEL did end up being the thermostat like my shop suspected. Apparently this has been extended covered by Mercedes, on my car at least until 2034. my shop actually had a G63 at the dealer for the same job so I left the car with them and it will go for replacement and I shouldn't have to pay anything.
Super Member
Joined: Mar 2009
Posts: 657
Likes: 119
From: Boston
2020 E63s Wagon, 2012 C63 AMG Coupe, 1989 560SL, 2023 911 Carrera T
Second follow up now that I have picked up my car. Kind of a strange story, my shop left my car with the dealer they use and even though it read the same thermostat code as the 21 G63 they also had there, the dealer's prescribed solution was not replacement like they did to the G63 but rather a software update of some sort. Car is back and no CEL but I will be keeping an eye incase it comes back.
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E63S
