Key FOB and TPSM not working

[Coda]

3 days ago water pump went out on the interstate. Firestone repaired next day. New pump new stat and new serp belt. No issues leaving then after 2 hours driving straight all 4 TPMS sensors failed and read 0. Then when I stopped the Jeep read Key FOB not in Jeep. Now the key fob won’t work only to push against the ignition to start. In addition all my LED lighting doesn’t work and turns off or won’t turn the current color. I know any voltage difference will mess up LED lights. Also all my lights are tied into the VOSwitch panel (relay switch panel) it was off at the time the water pump went out. I decided to replace the aux battery to eliminate any thoughts of it being that. Checked the 10a fuse for the TPSM that was also good. Run out of ideas.

Sponsored

 

[WILDHOBO]

That’s a lot of unrelated systems. My best guess is Firestone pulled on the wrong wire. It’s too much of a coincidence. I have a voswitch as well. It’s essentially an isolated system. They must have disconnected the batteries to do the project, and either didn’t reconnect everything, or shorted something when they did. Really sorry you’re dealing with this.

 

[ShadowsPapa]

If they haven't worked on many Jeeps, it's possible they pulled the negative battery cable thinking they had fully disconnected the electrical system - not realizing it was still hot and perhaps blew the high current fuse N3.
It's going to take some troubleshooting..........

 

[WILDHOBO]

If they haven't worked on many Jeeps, it's possible they pulled the negative battery cable thinking they had fully disconnected the electrical system - not realizing it was still hot and perhaps blew the high current fuse N3.
It's going to take some troubleshooting..........

Very good thought. Probably exactly what happened. I’d shut it off, disconnect the negative from both batteries (documented in several threads - make sure no power at all), then start checking fuses.

 

[Coda]

Very good thought. Probably exactly what happened. I’d shut it off, disconnect the negative from both batteries (documented in several threads - make sure no power at all), then start checking fuses.

update to this thread….. I first replaced the aux battery just to make sure that wasn’t the issue. Rechecked all wiring and fuses even the N3 fuse. Didn’t change anything. Check engine light finally popped on P0128. Engine wasn’t running cool and heat worked in the jeep so I eliminated the t stat as it was just replaced and decided to replace the coolant temp sensor. Didn’t shit off right away so I did a reboot on the tazer and the next morning all are working. Key Fob/LED lights/TPMS all working. Not sure how a sensor can interfere with all of these components but it is what it is. Thought I’d share this here.

Sponsored