2021 Honda CR-V: Parasitic battery drain
Common wear/failure (not a recall)
Symptoms
Owners of the 2021 CR-V report: parasitic battery drain. CarComplaints.com lists 3 owner complaints, average mileage 3,400 miles.
NHTSA has 58 owner complaints for the 2021 CR-V in this area. Examples:
- NHTSA complaint ODI #11757183 (filed 08/15/2026): “Hello nhsta -- my honda is a 2021 cr-v awd hybrid. two very unsafe events to report which occurred within a few weeks of each other, apparently from the same cause. first event, on 27 feb 2026, i was driving on a two lane county road, traveling about 40 mph, i…”
- NHTSA complaint ODI #11746954 (filed 06/27/2026): “Since april 2026 my honda crv 2021 had been having issues with all the warning lights on my dashboard turning on and off. when all the lights turn on the sensors don’t function the way they supposed to and won’t alert me when i’m getting close to a car or need…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: none clearly reported. Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Moderate
Finding and splicing chewed wiring is doable with a multimeter and patience but can be time-consuming; harness replacement is pro work. (Our assessment.)
Cost
No sourced cost range: get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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