I recently purchased a 2008 tl a/t 3.2l.
current issues:
1. abs/vsa+ triangle lights are on
2. Semi-perminant evap leak
3. Radio backlights do not work

Issue #1 info and attempted fixes:
when I received the car, the brakes were in poor condition and were replaced all around.
brake fluid was flushed and changed for dot4
driver side front wheel speed sensor was found cut, and replaced with an oem part.
Codes were read by a dealer similar scanner (top of the line inova tablet) producing:
13-13 perm left front wheel speed sensor circut malfunction
61-22 perm modulator-control unit power source low voltage
61-1 perm modulator-control unit initial IG low voltage
-The scanner was unable to clear these codes
I have no further ideas besides a new abs module and/or brake pedal sensor, and/or brake master cylinder sensor.
Issue #2 info and attempted fixes
shortly after receiving the car, I was prompted by the "check gas cap" warning. After a couple drives this replaced itself with a CEL.
the evap valve (+hoses to/from) and gas cap were replaced with oem parts, and issue was resolved.
roughly 2 weeks later the code has come back and i am unsure what may need to be checked or fixed.
Issue #3 info and attempted fixes (non nav headunit)
when I received the car, bluetooth did not work, all radio/air con/ door panel backlights did not work.
I have replaced all lights with led oem+ replacements, and individually tested with success, all are installed with correct polarity.
issue still persists.
The headunit appeared to be tampered with and replaced at some point, causing some questionable wiring. I have recently replaced all of the wiring to the radio and center dash with oem pigtails and soldered connections.
issue still persists.
The oem bluetooth module has been unplugged, and door wiring has been checked, all audio wiring appears to be in good condition, with the exception of the passenger front speaker being blown, aswell as some heavy grease inside the passenger door harness grommet.
I am unsure what further checks and fixes can be done
(codes potentially related to this issue will be attached below, as theres a decent amount)


I am happy to hear any and all input on potential fixes, past experiences of which are similar, and any general knowledge that may help me fix this thing.

Electrical related codes regarding issue #3

 

Regarding the ABS issue:

After replacing this sensor, did you test drive the car above 15 mph? Wheel speed sensor codes go away on their own once the VSA module detects they're working properly.

If the code has persisted after the test drive, measure the resistance across the two pins on the big VSA module connector which correspond to the front left wheel speed sensor. You should be able to measure between 5 and 25 megaohms. Make sure to manually set the range on your multimeter as the auto range function might mistake the high resistance for an open circuit.

Alternatively / additionally, look at live data off that speed sensor while on a test drive >15 mph.

Regarding the Evap issue, it's probably your purge valve stuck open, but worth pulling the code before you throw parts at it.