12V Auxiliary Battery Drain
ModerateElectrics & ElectronicsThe 12V battery can drain quickly if the car is not driven for more than a few days, leading to a "dead" car that requires a jump start.
Est. Repair Cost: £150–£250
Warning Signs:
Car won't unlock, Flickering dashboard lights, Hybrid system warning on startup
What to Inspect:
- Ask if the battery has ever been replaced
- Check for a trickle charger in the boot (a common owner addition)
- Test the voltage after the car has been sitting
Verified by IsItAGoodCar Research Team