Hello fellow Honda CRV owners,
I purchased a 2018 Honda CRV EX AWD brand new and have around 60k miles on it today.
Coming from a Honda Fit, and before that a Honda Civic, my love for Honda is strong (Hell, even my lawn mower is a Honda).
No issues outside of standard maintenance. Except for all warning lights on the dash. I read over the threads on this forum, hoping, praying that there would be some insight into what is behind this odd occurrence, only to bet read the standard 'to do list' to resolve the issue:
1. Reset the radio in accessory mode
2. Unplug the battery terminals
3. Replace the battery
4. Bring it to the dealership aka light money on fire and pray
The first time it happened, I freaked out. It was a bit over 50k miles and I called the dealership. Indeed they were aware this happens, and they actually recommended unplugging battery terminals, and if it happens again, to replace the battery. I didn't even have to bring the car in!
That didn't work. It stopped it, only for it to come back a long while after.
Then it happened again. I carry a 10mm socket wrench in the glove to quickly resolve the issue and it went away for a long while.
But then it happened again. And within two stars of battery unplug/replug, again .. And then again.
OK. Why? Typically I would drive for at least 30 minutes to 1 hour after a reset as we would be going somewhere. But when it consistently came back on these were short trips, maybe 5 to 10 minutes. Interesting... So I unplug/replug, drive it for 30-1 hour, and it's gone. Great.
But then it happened AGAIN. And again. And again. I know, I'm a broken record. BUT hear me out: I think I'm on to something.
I believe the issue is directly related to the car radio head unit. I find that if I drive the car with LKAS/ACC at a low level, 40-50MPH, that something is going on behind the scenes. As an engineer, I am leaning towards this being bad programming.
My hypothesis is that the combination of short drives after clearing the code, and/or driving the car with LKAS/ACC at low speeds, causes some type of memory leak in the head unit which causes the central electrical component which controls all the sensors to fritz.
Has anyone noticed similar occurrences? I would be inclined to believe that it is the sensors, except they all work after resetting the battery. So there is something else which is triggering it, and I think it's the head unit.
Thanks for reading my rant. Love the car, want to get this figured out, looking for if anyone else has noticed similar "triggers" to cause the dash fireworks display.
Battery was tested and is 410cc but testing at 480cc. It IS the original battery. Two different places checked it for free (Mavis and Advance Auto Parts). Both said it's fine.
Also no obd2 codes when scanning.
PS: Sorry mods.