How do I fix the interior lights and the running or parking lights? So far I tried the relay. the car was in an accident and everything worked on the car, until the body shop fixed the nose. Now I hav

It's possible that the issue is with the multifunction switch, as you mentioned. However, before replacing it, you can try checking the fuses and connections related to the parking lights and dash lights. It's also possible that there is a short in the wiring somewhere, so a thorough inspection of the wiring may be necessary.
If you are comfortable with electrical work, you can try tracing the wiring and testing the connections with a multimeter to identify where the problem may be. If not, it's best to take the vehicle to a professional mechanic who can diagnose and repair the issue.

tell good and bad, not just bad things.!
car starts and runs and drives ok? day time?
dash dimmer turned down, kids played with dads car?
well tail lamps dead (really are up to 10 or more parking lamps dead, is blow fuse or BCM failures.
why not scan the PCM see DTC errors first. save tons of work , if DTCs are there.
cars have 2 or more fuse boxes. cab and bay(engine)
did you check them all?
if car drives, I will say why parks fails. front and rear and sides of cars. are park lamps as are license plate lamps.
the BCM body brain on this car is SJB smart junction box.
SJB Fuse F2 and F3 good
and the HL switch not bad, and park switch there good
the SJB has CPU brain and a park relay
if the CPU sees park turned on it closes the park relay in SJB
there 8 park lamps.all 8 lamps run off fuse F3
so if one lamp works, then F3 is good if all 8 are dead F3 is blown
or the relay is bad.

these words assumes car runs. (engine runs)
and the battery is not dead
nor battery at 10vdc or less.
I check all that and all is covered in the service manual I just read.
for you.

You are chasing the wrong things. All the items that are giving you trouble are controlled by the Body Control Module, and connected to other modules and sensors via a Communication Bus computer network.

You can't fix this yourself and you can't fix it by just replacing the BCM. You need an auto electrician with a pro grade, bi-directional scan tool computer. Scan for DTRs and Comms issues, diagnose and fix.

https://www.google.ca/search?q=auto+electrician+near+me

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Body control module. That's the little rectangular box that has ribbon tape running from the fuse panel over to it. You can get one from a junkyard but you also have to get the PCM from the same vehicle. Local junk yards around here I got both 50 bucks.

Have you tried checking relays? if you find a relay related to parking lights, try swapping it with a relay of the same number if there is one in the panel. also have you check your DRL (daytime running lights) fuse relay? there are generally multiple locations for fuse/relay panels.

does your lights come on manually if you turn your dashlights up all the way your interior lights should come on. if they do then it might be a problem with the switch inside the door. also have you checked the bulb? there should be one on each side under the dash also.

fues, relay, fusible link, check interior fuse bloack

Try checking out your light bulbs in parking and backup light locations. Sometimes when one bulb goes out or just comes loose, it stops the entire circuit from operating.

It turned out that disconnecting the battery and reconnecting it reset the control module and fixed the problem.