Hi Matt
Thanks for the reply.
I'm away from the car for a few days but will check the amp when I return. I have had sound in the past (I've only owned the car for 2 weeks). It was all working the first day I collected it but the next morning the mmi system shut off upon engine start, but began working again a few minutes later. It was dead again 24hrs later. Removing the battery and charging overnight solved the problem and mmi/sound was restored. But later in the day it died again. This is typical of what has been happening since I got the car. When the mmi system is functioning the sound always works.
I have had the battery tested at Halfords, local garage and national auto centres. The first two test units were unable to provide a result due 'excessive noise', the last test showed a battery capacity of 60%, charge state 100%. After a long journey I measured the resting voltage and it was 12.8volts.
The battery has been in the car for 2 years. I note from the cars history that this is the 3rd battery the car has had in the past 6 years which seems excessive.
I don't know if it has been coded to the car.
I don't have vcds, I paid someone to scan it for me. The scan was performed by doing a first scan and clearing all fault codes. Only waited 10 seconds. Then starting the car, shut down and perform second scan which i have posted above.
I know about the rear light thanks.
I have a theory that the car had been jump started prior to me purchasing, when I bought the car the clock time was not correctly set and the battery access trim was not secured in place. I am wondering if a jump start has damaged the battery management unit and this in turn is causing a lot of the issues with the system.
Dave
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