Parasitic drain and sleep modes
Why some EVs drain their 12 V battery when parked.
You'll learn
- Understand parasitic drain and sleep modes
- Know which checks an owner can do and which need a professional
- Recognise warning signs early
Overview
Apps, sentry cameras and accessories can keep the car awake, stopping it from sleeping and draining the 12 V battery.
In depth
Workshops measure the current drawn with the car asleep. A very high reading means something is keeping it awake.
Long parking
Turn off camera modes and unplug accessories if parking for weeks.
Key takeaways
Remember this
- Accessories can stop the car sleeping.
- Too much drain flattens the 12 V battery.
- Disable extras for long parking.
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