Wipers gone wild.

[Papa5]

2019 JLU wipers come on randomly, turn signals won't work, service traction control light and check engine lightcome on. If I reset cpu and pcm everything is fine for a while, then all happens again. I replaced the steering column control module ie; turnsignal wipers switch. Had to go after market as Mopar was back ordered for who knows how long. Not sure what to check next.

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[jludave]

Not sure what to check next.

Batteries.

You have a 2019 vehicle and are likely well beyond the useable lifespan of the OEM battery/batteries. Dying, bad batteries are known to cause all types of weird electrical issues in the JL Wrangler. Depending on your engine, you may have a main and and aux battery. They both need to be replaced at the same time if you do not bypass the aux battery.

If you have an aux battery, seriously consider just replacing the main with a quality H7 battery and bypassing the aux. You will be much better off long term. I have done so and haven't looked back, as have many, many others on these forums.

https://www.jlwranglerforums.com/forum/threads/jumperless-aux-battery-bypass.95945/

 

[Papa5]

Replaced main battery with H7 a couple of months ago and bypassed the aux.

 

[Twojayhawks]

I threw quite a bit of money at this issue & never found a solution. Good news is last "episode" was 11/23 so I'm pleased MAYBE the gremlin has left the vehicle. Best of luck!

(30) Opinions please on what is wrong with my JL FOLLOW UP | Jeep Wrangler Forums (JL / JLU) -- Rubicon, 4xe, 392, Sahara, Sport - JLwranglerforums.com

 

[jludave]

Replaced main battery with H7 a couple of months ago and bypassed the aux.

OK. In that case, replace the CANBUS behind the glovebox.

https://www.jlwranglerforums.com/fo...ne-light-won’t-start-etc.132455/#post-2761346

 

[Johnny B]

How's that negative battery terminal look?

 

[Papa5]

I'll check into the canbus. Battery cables are like new.

 

[Twojayhawks]

The last advice I had after replacing batteries & canbus is this; Remove glove box (optional), next time an episode happens pull over, wiggle wires one at a time (going into canbus) & see if it stops the episode. IF this is successful, replace the connector on that wire as it likely has a bad connection. I replaced the canbus & it didn't cure it so it's certainly possible just ONE wire has a bad connection in the canbus. Last November was my last wanky episode and it was a dewsy. Besides the wipers, Christmas tree of dummy lights, lane warnings on both sides of the vehicle going off every time a car was next to me, no power steering etc. It was AFTER that they I got the recommendation to check wires. I drove around with the glove box out for a month waiting for it to happen again to try the wire wiggling. Maybe I was blessed as it hasn't happened again. I delt with it for maybe 2+ years sometimes as frequently as once a week.

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