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02-18-2015, 09:31 AM | #1 |
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Check Engine code U1118???
Hi guys,
For the first time since i own my M3 i had a check engine light that came on last sunday night. It was damn cold here in ottawa, canada (-35F). Car was running rough and i have scanned the code on the next morning and it was U1118 !! From my research its something between the signal from a computer to the other or something like this. Can it also be something else??? It was fine all day monday and last night i went and start the car after work and the damn code went on again, and yes it was still the U1118. Im looking to see if some of you guys have experience this before and what was the outcome??? Thanks Mike |
02-18-2015, 09:36 AM | #2 |
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Are you on the original factory battery still? It might be time to swap. Try charing it with a trickle charger before you replace it, though. It's hard to diagnose electrical gremlins Sorry I can't be of more help.
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02-18-2015, 10:13 AM | #3 |
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-35°F that's "-37° Celsius" ... Holy 5H1T !
Mike ,your balls must freezing off out there...So personal I think your battery has a hard time to keep up ! So as stated above just connect a good battery tender and let it sit overnight ...
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02-18-2015, 10:32 AM | #4 |
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Yes car is still under the original battery !! Car has 70k so ill see if i still have the same issue when temperature gets a little warmer !! Thanks for the help
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02-18-2015, 10:36 AM | #5 |
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Yes its a damn rough winter this year for us !! It was -40c past saturday night !!! Both previous owners of the car had heated garage so i guess its something new for my baby to deal with cold temperature like this haha
Last edited by MikeeM3; 02-18-2015 at 11:29 AM.. |
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02-23-2015, 08:49 AM | #8 |
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i'ts just a battery, change it before it leaves you stranded somewhere.
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02-23-2015, 09:58 AM | #9 |
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02-23-2015, 10:07 AM | #10 | |
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02-23-2015, 02:27 PM | #11 |
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buy a battery tender from Canadian Tire. It's about $40, a lot cheaper than a new battery. I live in Alberta where it's constantly -40 throughout the winter which can be 6 months long at a time. I always have my m3 hooked up to Battery tender. No problem yet!
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11-15-2018, 09:52 AM | #12 |
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Error code U1118
Hello MikeeM3
I also just got on my 2011 M3 coupe E92 check engine light code U1118 and code U1118P it's cold here in Washington DC also Just want to know if you was able to resolve the error code U1118 on your M3, I read some people say it's a battery replacement, just want know before I spend $400.00 on a new battery. Thanks |
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12-12-2018, 09:53 AM | #13 |
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Check Engine code U1118???
Check Engine code U1118???
I replace the battery 90Ah 900 C Crank, No more error codes on the 2011 BMW M3 coupe, any one that get's the error message just replace the battery |
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01-07-2019, 05:38 AM | #15 |
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When I had a BMW motorcycle they recommend that you put it on a battery tender when you're not riding it so the battery charges fully. I've done that will all my cars and I haven't had to replace the battery in any of them, and my M has had the same battery for 5 years. Just keep them charged up whenever possible, it will extend the life of the battery.
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