ABS, DSC and FTM lit up like a Christmas tree - Bimmerfest - BMW Forums



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BMWs throw back to the iconic 2002, with a renewed form and function. The smallest car in BMW's line up but still packs a punch. Available in coupe or convertible, powered by a naturaly aspirated inline 6 in the 128 or the turbo twin power inline 6 rocket sled 135.

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Old 04-22-2019, 07:09 PM
Robertalt Robertalt is offline
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Location: Toronto
 
Join Date: Apr 2019
Posts: 2
Mein Auto: 2012 BMW 128i Convertible
ABS, DSC and FTM lit up like a Christmas tree

Hi everyone,
I'm a first time poster, long time reader.

I have a 2012 128i convertible with a bad right front headlight. I was checking to see if it was the bulb, removed and reinstalled it, nothing. I put another bulb in that I knew was good, and nothing. So i checked the three fuses associated with the headlight that are hidden behind the glove box. All three were good. Started the car and boom! ABS, DSC and FTM lights all came on and stayed on.

Ran a diagnosis using an Innvoa 3106g and got the following:
5DF4 wiring supply voltage <9 volts
5DF8 undervoltage K130

Tested the battery, and got a warning reading. The battery was the original so I put a new battery in, registered it and had a glimmer of hope when I started the car as all lights were gone. That hope lasted about 3 seconds and all lights came back. Ran the diagnosis again and got the same two codes.

Any ideas, suggestions, anything?? I'm stuck
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128i, 5df4, 5df8, abs, dsc, ftm, trifecta, trifecta lights


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