DS3 1.6 VTi 2013 – No A/C, Roof Not Working, Lights Dim When touching accelerator accelerator pedal.

[marcingl]

Hi all,
VIN: VF7**************[VIN obfuscated, can be read by forum staff]
I’ve got a 2013 Citroen DS3 1.6 VTi and I’m having multiple electrical issues at the same time:
• A/C not working – no click from the compressor
• Roof not opening (electric folding roof)
• Lights dim when I press the accelerator
• Windows move slowly when engine is running
• Voltage drops under load (around 14.2V at idle but drops below 13V when touching accelerator pedal, many quick touch)
• Blower not kicking in properly around 105°C
Battery shows around 12.2V with engine off.
Has anyone experienced similar issues?
Thanks in advice.

[mickthemaverick]

Mainly signs of a dead battery. It should show around 12.7V with everything off so clearly in need of either an overnight charge followed by a BSI reset according to the procedure in the link below, or if that does not bring the standing voltage up to 12.7 then a new battery may resolve your issues.

viewtopic.php?p=601679#p601679

[Paul-R]

• Lights dim when I press the accelerator
• Windows move slowly when engine is running

These two seem strange to me. When you say "press the accelerator" I'm presuming with the engine running. Or is that just stationary with the lights on and the ignition off? Windows are slow with the engine running, is that at tickover? Do they speed up if you raise the revs?

How old is the battery?

[andyandjulie]

Is the alternator actually charging?

[marcingl]

Hi, I changed the battery and it shows 12.8V. I also use the car every day so the alternator is charging, but the issue is still the same even after resetting the BSI. What could it be? Could the BSI be faulty?

[marcingl]

Notice as well radiator fan not working too, can anyone help?