Check engine light on new 2021 G63!
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From: Marineland FL
'27 EQG deposit, '22 F8 Spyder, '20 Fat Boy
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Mercedes Benz C63S
Joined: Dec 2019
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From: Marineland FL
'27 EQG deposit, '22 F8 Spyder, '20 Fat Boy
If that was the problem it will take a few cycles for it to clear. I read that is the most common reason by far for a CEL. Or stop by one of the auto parts stores that will read your CEL for free.
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Mercedes Benz C63S
light didn’t go off. I will cycle it a couple more times and see. Hopefully it’s nothing big. How many cycles did it take for your light to go off? I haven’t seen any change in performance of the engine such as higher revs or anything else. The onboard computer is oblivious to anything going on either.
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From: Marineland FL
'27 EQG deposit, '22 F8 Spyder, '20 Fat Boy
light didn’t go off. I will cycle it a couple more times and see. Hopefully it’s nothing big. How many cycles did it take for your light to go off? I haven’t seen any change in performance of the engine such as higher revs or anything else. The onboard computer is oblivious to anything going on either.
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From: Northeast
2012 S350 Bluetec, 2014 GLK250 Bluetec, 2026 E350 4Matic
That tells me they may have overfilled the gas tank and soaked the evap system. Just a thought. No CEL on mine in over 1K miles.
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Mercedes Benz C63S
So check engine light came on again! I got an OBD2 scanner and it could not find any modules giving out errors. I tried resetting the light but it wouldn’t do that either. So I’m stuck without options other than taking the car in to the dealership again, wasting 2-3 hours and being told that nothings wrong. Any suggestions on what I can do? I got an Ancel OBD2 scanner from Amazon. Thanks!
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From: NV, UT
2012 Land Rover LR4 5.0L V8 LUX HD
Take it back and tell them the problem isn't fixed.
Typically, OBD2 scanners can check some codes across all brands as part of an industry standard. But there are proprietary areas and PIDS in the vehicle that either require additional software with a software license to access or a hacked version of that software. Hopefully that is not your issue. Either way, make the stealer fix it.
Typically, OBD2 scanners can check some codes across all brands as part of an industry standard. But there are proprietary areas and PIDS in the vehicle that either require additional software with a software license to access or a hacked version of that software. Hopefully that is not your issue. Either way, make the stealer fix it.
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From: Colorado
G550
So check engine light came on again! I got an OBD2 scanner and it could not find any modules giving out errors. I tried resetting the light but it wouldn’t do that either. So I’m stuck without options other than taking the car in to the dealership again, wasting 2-3 hours and being told that nothings wrong. Any suggestions on what I can do? I got an Ancel OBD2 scanner from Amazon. Thanks!
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Mercedes Benz C63S
Dropped it off at the dealership again today. Turns out it’s not the gas cap. Rather there is an emissions leak and they need to figure out where. Gremlins! Will keep y’all posted on how it goes
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Mercedes Benz C63S
After changing the purge valve and the charcoal canister, the frickin light went off again! Took it back in and now they will change the fuel tank.. they can’t seem to find any other leaks. Thoughts?
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From: Colorado
G550
Is the service manager using a genuine Ouija Board for diagnosis or a cheap Chinese knockoff known to be unreliable? Seriously, how are they troubleshooting this - changing out one component at a time hoping to get lucky?
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Mercedes Benz C63S
LOL! Sounds like a Ouija board. The error code is the same each time. My honest feeling is that it’s a bad sensor.
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2018 GLE350, 2014 G550, 2000 SL500, 1980 TR8, 1995 E320 Cabriolet
The dealer needs to put away his Ouija board and do a smoke test on the truck. This will pinpoint exactly where the leak is rather than just randomly replacing things. There are three active components to the evap system (purge valve, the canister vent valve, and tank pressure sensor) and four passive ones (gas cap, charcoal canister, vapor/fuel lines, and the tank). A smoke test (with the Star system to cycle the valves) will diagnose all of them except for the pressure sensor, which would a diagnosis by exclusion of all the others.
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From: Colorado
G550
Changing out the fuel tank is not an "enjoy an espresso in our customer lounge while you wait" service procedure. Have all the other usual suspects been ruled out, or is this just another shot in the dark? I agree with the smoke test diagnostic - it's the only way to locate a leak if it exists.
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Mercedes Benz C63S
Changing out the fuel tank is not an "enjoy an espresso in our customer lounge while you wait" service procedure. Have all the other usual suspects been ruled out, or is this just another shot in the dark? I agree with the smoke test diagnostic - it's the only way to locate a leak if it exists.
