Symptoms
- Phone shows 'not charging' or charges very slowly when plugged into the car
- Port works for data/CarPlay but not charging
- Other USB accessories also don't get power from that port
- Port worked fine before but stopped suddenly
Likely causes
- CommonCable only supports data, not chargingSome cables are wired for data transfer only and can't deliver charging current.
- CommonPort set to data-only mode or low power for CarPlay/Android AutoCertain ports prioritize data connections for these features and provide limited charging power.
- PossibleBlown USB power fuseA dedicated fuse can protect the USB circuit and blow from a short or overload.
- PossibleFailed USB port hardwarePorts can wear out or fail after years of plugging and unplugging cables.
What to do
- Try a different, known-good charging cable, ideally one you know works elsewhere.
- Test a different USB port in the car if more than one is available.
- Check if the phone charges when only plugged in without launching CarPlay or Android Auto, to isolate the cause.
- Check the fuse box for a USB or accessory power fuse and replace if blown.
- Try charging a different phone or device in the same port to rule out a phone-specific issue.
- If no port charges anything, consider a 12V cigarette lighter charger as a temporary workaround.
Tools and parts
- Fuse puller
USB power fuseSearch: “car USB accessory fuse for your model”
12V USB car chargerSearch: “12V cigarette lighter USB car charger”
When to call a pro
If no cable or port charges any device and the fuse is fine, a mechanic should check the USB module's power supply.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.