Three Amigos Nightmare (Fuel Tank Drop?)

2019 TDR OR 6-Spd Manual. 110K miles.

Snow/ice melted last week and I suddenly got the three amigos (ABS, Brake, Traction Control Lights). Likely due to extremely bad winter here in upstate NY. But I also thought the truck in Nov 24 with 100K miles and had it wool waxed, so it could be the woolwax or just its mileage giving me trouble too (original parts).

Diagnostic from independent trustworthy local mechanic threw 19 codes, most likely left rear ABS which he thought was bad.

Replaced sensor, problem solved… but 24 hours later, three amigos returned.

Trusted mechanic at the end of his rope, sent me to the dealership.

Mechanic there was able to trace faults in wiring back up past the ABS wiring harness, but says the fault is higher along the line, and he will need to drop the fuel tank (4 hrs labor/$667) to continue diagnostics. Lord knows how much the actual repair will be.

Could be wiring or ECU. At this point, does what the dealer mechanic is telling me jive/is dropping the tank necessary for the rest of this diagnosis? I would attempt work myself, but I live rural with no garage/tools and my military schedule doesn’t leave me with time on night shift.

50% of the time I start it and have no lights. The other half the time all 3 light up when I crank, or will come on after driving for a bit.

I’m also getting cluster warnings and codes with my front Radar sensor master module.

Truck drives fine/nothing wrong with any of the lighted systems. Just annoying I can’t use cruise control. Starting to wonder if this electronic nonsense is worth the repair costs or if I should just start pulling fuses and go analog.

Any help is appreciated. Pics for attention.

 

^With an OR, can't pull fuses or you'll disable powered brakes completely and rely on your calf.

What are the 19 codes? Post the scan tool report?

 

NY?? Take straight to SMA if I were you.

 

Unfamiliar with SMA. I’m in central NY if that helps.

Thanks for the pro-tip on the fuses. I admittedly don’t know much about electrical and haven’t researched it yet. I’m sure I would have figured that out before I actually got under the hood, but idk what to do at this point.

And as for the codes, I can post later, but would take awhile as I don’t have them on me and am at work.

Main ones were anticollision master module, traction control, ABS, wheel speed sensor, traction control, and brakes.

My appointment with the dealer is in the morning, so I guess I’m just going to take it in and hope for the best.

 

its south main auto in Avoca. Its the place the mechanics and dealerships send the stuff they can't figure out.