2014 honda crv draining battery
Asked by Nancy May 17, 2021 at 05:37 PM about the 2014 Honda CR-V
Question type: Maintenance & Repair
Car was not driven for 3 days. Battery completely dead. Put battery on
charger and had battery checked out and guy at local auto parts store found
nothing wrong with it but stated there seemed to be a parasitic draw. Took
car to Honda dealership. They determined that the alternator was bad. Took
car to another local mechanic and they too determined the alternator was
bad. Had the alternator replaced. Drove the vehicle last Thursday. Have not
driven it nor opened any doors (it is garaged) since. Opened the door and
noticed no interior lights. Got the key and tried to start the car. The battery
was dead. Put the battery on the charger and took the car back to the
mechanic. What could be causing the parasitic draw to drain the battery like
this? Haven't had any issues with the vehicle since purchasing it and this
problem started with the past two weeks.
5 Answers
Have a local mechanic perform a draw test. In my experience dealers don't like diagnosing issues, just replace parts to make money.
Thanks for responding! After discovering the battery completely dead again yesterday, I put the battery on the charger and once charged, I drove it immediately back to the mechanic. One oddity I noticed yesterday, when I charged up the battery, the panel with the clock, etc. did not come on. In the past it came on but with the time flashing needing to be reset. Yesterday it was totally blank. This was mentioned to the mechanic.
Alec Hartle answered about a year ago
Hi Nancy, Just wondering if you figured out what caused the parasitic drain? My moms car has a similar issue. Alternator is ok.
Hi Alec, I am sorry that your mom's car is having the same issue as mine had last year. When the certified Honda mechanics nor a local mechanic could find the issue I brought my vehicle home and decided to try things on my own. I am glad that I like to tinker with things! What I started with was removing the BU fuse #29 and Interior light fuse #28 from the fuse box beneath the hood (please confirm those match your fuse box if you attempt this). The battery drained. Then, I put one back in at a time to see if the battery drained. I tried this for a few days and discovered it only drained with the BU fuse in but not the other. So, I left #28 in and left out #29. With the BU fuse out the battery never drained. I would replace the BU fuse when I needed to drive the vehicle (and I took a handy jump starter just in case). I then began doing a lot of research (because I am not a mechanic and don't know a lot about cars!) and came across an article that stated if a drivers door keyhole was out of adjustment (it should be at 12 o'clock) it would cause battery drain. Inspecting mine showed it was at the 2:00 position. I took my vehicle to a local locksmith. I was told it looked at though someone had taken a screwdriver and tried to get the drivers door open. A new key cylinder was ordered and installed on June 8th. I left in both fuses in overnight and there was absolutely no drainage to the battery. Apparently, with the keyhole out of place the car 'thought' the door was open and drained the battery, or something like that. Like I said, I am not a mechanic! Anyway, I haven't had any issues since and I do regret having replaced the alternator which I now know was not the problem at all. I hope this helps you find the source of the problem with your mom's car and that it will be really simple like replacing an relatively inexpensive part like a new key cylinder!
I have had my car at dealer at least 17 times picking up today again. They say they find nothing again. I have to jump it almost daily when cold and it's happened for the last 4 years all winter and spring. Feels like they know they cannot locate and mechanics paid incentive don't want to mess with it. I also had in for the Actuator grinding and showed video and they again say cannot replicate. Last Honda ever for me. Gonna charge it and sell it as soon as my Toyota Camry xse AWD comes in Never own a Honda again and this was number 6