Battery drain.

[ainarssems]

Have a look at this, same issue but no definitive solution. http://forum.a8parts.co.uk/showthrea...LDNICK+BATTERY

[MikkiJayne]

That fuse goes directly to the Bose amp on the other side, then it also feeds the antenna module in the passenger-side and then, iirc on to the head unit. There is nothing other than audio systems on it.

[RICKY D]

Thanks guys. I suspect my aftermarket stereo is the culprit then.

Everything about these cars is bugging lately because it's not straight forward.

Off to buy a Honda Civic......

[HPsauce]

Do you have an aftermarket stereo driving a Bose system?
IIRC there's a wake/sleep signal that the Bose amp receives from the OEM RNS head unit. If that's not being sent correctly your amp may be permanently "live".

[oldnick]

to pick up where I left off in the other thread , having removed the alarm but left the 20 amp fuse in have been ok starting the car so left well alone

but now being in england with consequent low temperatures again struggling
I have decided to start again ....in case previous problems have damagedthe battery have decided to fit a new one and start again.......hankook 60038 4 year guarantee arriving monday

ps can anyone with a working alarm confirm that it works on the 20amp fuse referred to ? it is certainly where my drain occurs ,disconnecting the CD stack , radio or aerial makes no difference

[MikkiJayne]

The alarm is not connected to the 20A Bose fuse - I've stripped that wiring out of mine completely. If memory serves, there is another one in the same location though. Maybe that's the drain rather than the audio one?

[oldnick]

Originally Posted by MikkiJayne

The alarm is not connected to the 20A Bose fuse - I've stripped that wiring out of mine completely. If memory serves, there is another one in the same location though. Maybe that's the drain rather than the audio one?

don't have Bose so maybe that is different in any case removing the 20amp fuse ; just had look and the 20 amp just says radio loudspeaker telephone[ never fitted ] ; the other fuse is 25 amp for ESP

[RICKY D]

Originally Posted by HPsauce

Do you have an aftermarket stereo driving a Bose system?
IIRC there's a wake/sleep signal that the Bose amp receives from the OEM RNS head unit. If that's not being sent correctly your amp may be permanently "live".

10 out of 10 to HP

I finally managed to see another audio specialist and he immediately picked up on the Bose amp being active all the time. He believed the Bose harness being used was faulty and wasn’t switching off the amp and it was permanently live just as HP said. He swapped over to a new harness that runs from the headunit pre outs instead of the speaker wires. The trade off is a small thump sound as the amp powers on/off but I can live with this for now. To eliminate that I would need to swap out my speakers and Bose amp to an aftermarket set.....watch this space!

I’ll monitor over the next few weeks as I only had it done yesterday but the technician who fixed it is confident this will be it. Fingers crossed and thanks to all who gave input.

[HPsauce]

Blimey! I posted that just over a year ago.
On the other hand solving a problem in a year is often quite quick for me.......

Originally Posted by RICKY D

He swapped over to a new harness that runs from the headunit pre outs

That's the way OEM works so yes, the original install was incorrect.
Surprised the levels from a speaker output didn't damage the Bose amp!

[RICKY D]

It wasn’t direct from the speakers to the Bose amp. It was going through the harness which has some magical boxes that dialled down the signal suitable for a feed in to the amp. The technician and said it was wired correctly but believed it was faulty.