Lil Fairiit
Member
- Joined
- Dec 15, 2013
- Messages
- 37
- Points
- 60
It's been posted and commented on before so I'm just adding my experience:
TL;DR: Blue&Me stopped working, battery started draining - disconnected B&M, battery no longer draining.
I own a 2013 Pop manual (1.2L), bought new. Current battery is less than 2 years old but for the last 8 or so months have just had so much trouble with the battery going flat when the car wasn't driven for a few days. Winter made it worse. I then realised the problems coincided when the bluetooth stopped working and the mileage started flashing. Web searching found comments and references linking the two issues but I never found an exact reason why a seemingly dead module should cause parasitic drain.
My workshop confirmed the alternator was fine and battery health was good. I did a parasitic drain test and found a 0.4mAh current draw with everything off, doors closed, nothing plugged into the ciggy socket but I didn't know if that was normal or not, so a visit to an auto-electrician was on my to-do list. I never got there. The battery finally gave it up and I couldn't revive it with my home charger. I took the battery back to the shop I bought it from and they put it on their workshop charger and revived it.
At that point I decided this was it - last resort before going to an auto-electrician. I stripped out the back of the car and disconnected the wiring loom from the B&M module. A few days later, I went away on holiday. The car sat for 6 days unused and I've jumped in today and started it. It fired up instantly. The drain problem would have absolutely killed the battery after 6 days on the driveway so I'm calling it fixed, and most definitely linked to a dead B&M module.
I still haven't found an explanation why a dead module drains the battery so my purely speculative reasoning is that the B&M module has it's own independent power feed but is powered on and off by the head unit. When it lost connectivity with the head unit, it remained powered on constantly. Hence, battery drain.
TL;DR: Blue&Me stopped working, battery started draining - disconnected B&M, battery no longer draining.
I own a 2013 Pop manual (1.2L), bought new. Current battery is less than 2 years old but for the last 8 or so months have just had so much trouble with the battery going flat when the car wasn't driven for a few days. Winter made it worse. I then realised the problems coincided when the bluetooth stopped working and the mileage started flashing. Web searching found comments and references linking the two issues but I never found an exact reason why a seemingly dead module should cause parasitic drain.
My workshop confirmed the alternator was fine and battery health was good. I did a parasitic drain test and found a 0.4mAh current draw with everything off, doors closed, nothing plugged into the ciggy socket but I didn't know if that was normal or not, so a visit to an auto-electrician was on my to-do list. I never got there. The battery finally gave it up and I couldn't revive it with my home charger. I took the battery back to the shop I bought it from and they put it on their workshop charger and revived it.
At that point I decided this was it - last resort before going to an auto-electrician. I stripped out the back of the car and disconnected the wiring loom from the B&M module. A few days later, I went away on holiday. The car sat for 6 days unused and I've jumped in today and started it. It fired up instantly. The drain problem would have absolutely killed the battery after 6 days on the driveway so I'm calling it fixed, and most definitely linked to a dead B&M module.
I still haven't found an explanation why a dead module drains the battery so my purely speculative reasoning is that the B&M module has it's own independent power feed but is powered on and off by the head unit. When it lost connectivity with the head unit, it remained powered on constantly. Hence, battery drain.