E92 M3 Battery Discharge, clock reset and ABS issues

[AlpineF30]

Hi there,

Hoping somebody here is able to help me.

I bought an E92 M3 on Friday. Its a 2007.

I took the car for a drive on Saturday but when I started the car got the following warning "Increased Battery Discharge" and the clock needed reset.

I reset the clock and went for a drive a few miles down the road the ABS, DSC, DBC and FTM failure warnings appear on the iDrive. I am hoping they are related to the discharge issue.

Got home and attached a trickle charger to the car but it woldn't go over 11 volts and the battery is the original battery that came with the car and the previous owner has had the car parked up for 6 months.

Got a replacement yesterday and fitted it. It was an AGM battery and the same CCA as the battery I replaced.

Took the car a drive no errors on the dash.

I got into the car this morning the increased battery discharge issue is back and the ABS lights are back on and the clock needs reset. I checked the voltage of the battery and all is healthy.

Drove the 50 mile commute to work and shut the car off. Came back 10 mins later and started the car the increased battery discharge warning appears again and the clock needed reset along with the ABS lights.

The new battery hasn't been registered to the car yet as I am waiting the cable to arrive so I can register it and read any logged codes.

If anybody has any pointers it would be great

Edited by AlpineF30 on Monday 12th November 10:49

[Jez m]

M3cutters forum will prob be a better source of help.

I'd ask on there.

Ps. Check the recall has been done on your car.. this is to do with battery terminals.

[Dan_M5]

Check if the alternator is charging properly

[AHUX]

I had the exact same issue last weeks ago, I took it to BMW and apparently the fault was the earth cable had become lose. Might be worth checking if you're still experiencing problems.

[gixermark]

is it going into limp mode too ? if so could be the actuator(s)

[Spx]

Alternator!

[KPB1973]

I think it'll be because the battery isn't coded to the car yet, or the alternator as suggested.

For info, there's also an outstanding recall for a battery terminal connection, which sounds like it might need doing if it has been stood for that long.

You can check on the MOT History website by just sticking your reg in.

Good luck.