Volvo Owners Club Forum - View Single Post

Fmonty · Apr 2nd, 2021, 15:27

Afternoon all,

Last night I went to start my V50 D3 2011 and as I turned the key to III it all went dead. I assumed I had foolishly let the battery go flat so had it jump started and it eventually started after 20 minutes of donor power.

I then drove home, when coasting and going for a sharp turn all electrical power cut out but engine stayed running. I then got home and it promptly died electrically.

This morning I fitted a new battery and cleaned off all the terminals. I noticed a lot of heat damage around the positive terminal, even exposing some of the Battery Management System. The positive terminal clamp was only finger tight, and there was residue on the battery around the terminal.

New battery fitted and wires temporarily insulated with tape, it started fine, but after running for 5 minutes the positive terminal clamp was already warm.

Has anyone experienced this before? I assume the car cut out whilst driving because of high electrical load from the steering pump.

Next step to replace the exposed BMS wire and maybe the positive terminal wire?

Apr 2nd, 2021, 15:27	#1
Fmonty New Member Last Online: May 25th, 2021 10:00 Join Date: Apr 2021 Location: Bristol	V50 Battery/Electrical Power Issues Afternoon all, Last night I went to start my V50 D3 2011 and as I turned the key to III it all went dead. I assumed I had foolishly let the battery go flat so had it jump started and it eventually started after 20 minutes of donor power. I then drove home, when coasting and going for a sharp turn all electrical power cut out but engine stayed running. I then got home and it promptly died electrically. This morning I fitted a new battery and cleaned off all the terminals. I noticed a lot of heat damage around the positive terminal, even exposing some of the Battery Management System. The positive terminal clamp was only finger tight, and there was residue on the battery around the terminal. New battery fitted and wires temporarily insulated with tape, it started fine, but after running for 5 minutes the positive terminal clamp was already warm. Has anyone experienced this before? I assume the car cut out whilst driving because of high electrical load from the steering pump. Next step to replace the exposed BMS wire and maybe the positive terminal wire?