Check engine light on - 150 miles from home (and nearest dealer)
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Joined: Oct 2017
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2015 SL550, 2017 GLS 550, 2010 G550, 1995 E320 Cabriolet
Check engine light on - 150 miles from home (and nearest dealer)
Any way to check what the problem is? I checked the obvious potential issues (i.e. gas cap) but nothing seemed out of the ordinary.
Thread Starter
Super Member
Joined: Oct 2017
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2015 SL550, 2017 GLS 550, 2010 G550, 1995 E320 Cabriolet
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From: Colorado
G550
This is what is so annoying about present day automobiles -- they have more computing power than what sits on your office and home desks combined, and any ECU could easily provide you the OBDII code and interpretation on the infotainment screen, but instead all you get is a check engine light that's completely meaningless, and causes you great inconvenience and undue panic.
Last edited by streborx; Jul 30, 2021 at 12:17 PM.
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From: Massachusetts
2018 GLE350, 2014 G550, 2000 SL500, 1980 TR8, 1995 E320 Cabriolet
Stop at any Autozone, Advance Auto Parts, etc. -- they'll loan you a code reader to use in the parking lot and help you figure out what needs attention.
This is what is so annoying about present day automobiles -- they have more computing power than what sits on your office and home desks combined, and any ECU could easily provide you the OBDII code and interpretation on the infotainment screen, but instead all you get is a check engine light that's completely meaningless, and causes you great inconvenience and undue panic.
This is what is so annoying about present day automobiles -- they have more computing power than what sits on your office and home desks combined, and any ECU could easily provide you the OBDII code and interpretation on the infotainment screen, but instead all you get is a check engine light that's completely meaningless, and causes you great inconvenience and undue panic.
As for the OP's issue, did you check that your gas cap is on tightly? A lose cap can cause a CEL (which will self clear after a few drive cycles once the cap is tightened).
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From: Colorado
G550
It should be required. Indeed, the California version of early OBD required that codes be readable without the aid of external instrumentation. This is why you find "blink" LEDs on CA cars of that era. No excuse for not having it nowadays.
As for the OP's issue, did you check that your gas cap is on tightly? A lose cap can cause a CEL (which will self clear after a few drive cycles once the cap is tightened).
As for the OP's issue, did you check that your gas cap is on tightly? A lose cap can cause a CEL (which will self clear after a few drive cycles once the cap is tightened).
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Thread Starter
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Joined: Oct 2017
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2015 SL550, 2017 GLS 550, 2010 G550, 1995 E320 Cabriolet
The light disappeared yesterday after I got home lol.
In other news, I got exactly 20MPG on the 130 mile trip home. Pretty good for a G550 if you ask me.
In other news, I got exactly 20MPG on the 130 mile trip home. Pretty good for a G550 if you ask me.
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MBWorld Fanatic!
Joined: Oct 2019
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From: Colorado
G550
Best I've ever logged is 18.6 mpg at altitude (~7000 ft.) but with ethanol blend premium (91 octane). Plan to fill up with unblended fuel next tme and compare.
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2015 SL550, 2017 GLS 550, 2010 G550, 1995 E320 Cabriolet
I don't know if it makes a difference, but I put two 20oz cans of Seafoam into roughly a quarter tank of gas. Before I was getting 17ish MPG. I'm thinking about putting a can or two directly into the intake to see if it makes anymore difference.
I should add that on the way to my destination, I averaged 18.9 MPG, so averaging the two out, I got 19.5MPG round trip. Still, a great result for a 388 HP rolling brick.
I should add that on the way to my destination, I averaged 18.9 MPG, so averaging the two out, I got 19.5MPG round trip. Still, a great result for a 388 HP rolling brick.
