What is the 12V Auxiliary Battery Drain problem on a 2021 Toyota C-HR?

Common Problems with the
2021–2024 Toyota C-HR

We've identified 1 known issue that can affect the 2021–2024 Toyota C-HR. None are considered critical, but they're worth knowing about before you buy.

Known Issues

Serious

Moderate

Minor

The 2021–2024 period has an average number of reported issues compared to other Toyota C-HR year periods.

All Known Issues

12V Auxiliary Battery Drain

MinorElectrics & Electronics

The small 12V battery can go flat if the car is left unused for more than 4-5 days, a common issue on hybrid models.

Estimated cost: £120–£200Affects: 2016–2024

Typical symptoms

•Car won’t start
•Remote locking fails
•Electronic glitches

What to inspect before you buy

✓Check battery age and voltage
✓Ask if it has been replaced recently

Buying Tips for the 2021 Toyota C-HR

✓Check the hybrid battery health report from a main dealer to ensure the 10-15 year battery warranty is still active
✓Modern C-HRs are prone to 12V battery drain; ensure the car is driven regularly to keep the auxiliary battery charged.
✓Inspect the rear bumper and blind spots for parking damage, as rear visibility is notoriously poor

2019–2020 Toyota C-HR