Front light faults
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- Posts: 2
- Joined: Mon Jul 15, 2024 2:48 pm
Hi All. I have 2019 XC40 diesel. I was checking fuses recently as had faulty windscreen water pump, now resolved. All fuses look ok on engine bay but still getting headlight fault which I think is short circuit. Maybe a relay but can't figure out. I've tried to clear fault codes but still reappear, see attached. Does anyone know what these fault codes relate to?
Yes, did you change your battery? I have a 2018 D4 AWD and I already have changed the battery on January 2021. I'm thinking of getting a new one within a year, after some 4-5 years.
I do have a heater, so maybe my car needs a more often battery replacement, but your 11.8V might be the issue here. Or some mice ate a piece of wire that goes to headlamps, which causes a shortcut here, draining the battery and dropping the voltage.
I do have a heater, so maybe my car needs a more often battery replacement, but your 11.8V might be the issue here. Or some mice ate a piece of wire that goes to headlamps, which causes a shortcut here, draining the battery and dropping the voltage.
XC40 D4 AWD R-Design 140 kW 2018
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- Posts: 2
- Joined: Mon Jul 15, 2024 2:48 pm
Thanks Everyone. Car is starting ok with battery so would have thought it would struggle to start on colder mornings. Will see if I can get it tested as have seen start/stop batteries fail before.
The electronics are not fed by the same battery that starts the car. Yours will have the normal battery for starting, and a small 12v battery for the electronics. It's likely this that's failing.
B4 AWD Inscription , Fusion Red, Blond interior. Drivers Assist, Climate, Tinted rear windows and Towing pack.
Ordered 14 Dec 20, delivered 10 March 21
Ordered 14 Dec 20, delivered 10 March 21
Felindre makes a good point. Failed support battery is a known issue for MY18-20, you find on the forum multiple reports related to this problem. Support battery failed in my MY20 and Volvo replaced it with a new, improved unit free of charge.
2020 T4 FWD Momentum Pro Sensus OS