# 2018 Honda HR-V battery drain

**URL:** <https://community.cartalk.com/t/2018-honda-hr-v-battery-drain/150528>\
**Category:** Maintenance/Repairs\
**Tags:** cr-v, honda\
**Created:** [October 11, 2019, 8:42pm UTC](https://community.cartalk.com/t/2018-honda-hr-v-battery-drain/150528 "2019-10-11T20:42:05Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Julie03](https://avatars.discourse-cdn.com/v4/letter/j/aca169/32.png) [@Julie03](https://community.cartalk.com/u/Julie03)\
**Post date:** [October 11, 2019, 8:42pm UTC](https://community.cartalk.com/t/2018-honda-hr-v-battery-drain/150528/1 "2019-10-11T20:42:05Z")

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Battery dies if car isn’t driven for 4 days

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [October 11, 2019, 8:46pm UTC](https://community.cartalk.com/t/2018-honda-hr-v-battery-drain/150528/2 "2019-10-11T20:46:55Z")

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You have some electrical component that is draining your battery. Have a mechanic do a parasitic drain test on the car.

If you have replaced the radio, installed after an market car alarm, remote starter or backup camera, assume one of these is the cause.

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**Author:** ![bartsimp63](https://avatars.discourse-cdn.com/v4/letter/b/4da419/32.png) [@bartsimp63](https://community.cartalk.com/u/bartsimp63)\
**Post date:** [October 18, 2019, 6:06pm UTC](https://community.cartalk.com/t/2018-honda-hr-v-battery-drain/150528/3 "2019-10-18T18:06:33Z")

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Hi I had the same problem it was The AC relay sticking in the closed position.  
To find out do a parasitic draw test see YouTube lots of videos [https://www.youtube.com/watch?v=KF1gijj03\_0](https://www.youtube.com/watch?v=KF1gijj03_0).  
I connected multi meter between neg terminal on battery and neg battery cable it was pulling over 3amps should be below 500 milliamps. I then tapped the relays one at a time till amps dropped or get someone to pull fuses one at a time to find witch circuit is causing drain.  
make sure you use a 20 amp meter and don’t open doors or turn anything on whilst meter is connected.  
The Aircon Relay might be culprit as it is a common fault on the CRV.  
Might be worth buying a new one and replacing it as they are below £10.

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**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\
**Post date:** [October 18, 2019, 6:09pm UTC](https://community.cartalk.com/t/2018-honda-hr-v-battery-drain/150528/4 "2019-10-18T18:09:02Z")

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You’re under warranty, have the dealer check it out and fix it.

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [October 18, 2019, 8:32pm UTC](https://community.cartalk.com/t/2018-honda-hr-v-battery-drain/150528/5 "2019-10-18T20:32:27Z")

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> [@Mustangman](#):
>
> Have a mechanic do a parasitic drain test on the car.

… but be sure that the mechanic is one at the Honda dealership.  
A 2018 vehicle is covered by multiple warranties, and the needed repairs will only be free if the OP has them diagnosed and repaired at a Honda dealership.