Truck won’t start after a wash

[ZR2]

Hey guys,

Well this is the second time. Just a normal car wash, they did spray water underneath the truck too, and it turned on fine when i took it to the drying bay and parked it. After like 20 minutes when they done, they car won’t start. The dash is throwing “low battery voltage” but it ain’t true, the battery is brand new and i can hear the ignition fine but it won’t start. I left it at car wash and will come in the morning because to tow it not sure if it’s possible to put it in nuteral. I tried to disconnect the battery and waited with no avail.

The first time happened and i did wash the engine with steam, it was complaining about the rear parking sensor not working can’t recall the exact error. But with battery disconnect, the car stated fine.

What do you think the issue might be, as this ain’t normal.

 

[AXE]

There may be water getting into the ECU from the undercarriage wash.. the ECU sits behind the drivers front wheel well near the bumper, so water from below can get to it. Check the three connections there, especially if yiu have the Range DFM module.

 

[ZR2]

There may be water getting into the ECU from the undercarriage wash.. the ECU sits behind the drivers front wheel well near the bumper, so water from below can get to it. Check the three connections there, especially if yiu have the Range DFM module.

Yeah checked there but nothing visible and hope it’s properly sealed. Had to take the fiberglass liner out to remove the range module before towing it to the dealership. Also will have the guy put it in neutral from underneath as there’s no nuteral override safety switch im afraid.

 

[NullNomad]

and people make fun of me for not washing my truck on a regular basis...


all kidding aside, I hope this gets sorted out for you. curious to hear what they say the problem is.