Did you check the bulb? The filament might be broken and making intermittent contact. I would replace both bulbs as a starting point anyway. Old halogen bulbs don’t put out as much light as new ones. If that doesn’t fix the problem, check the headlight connector for corrosion and fit. Also look for any wear on that wiring harness.

FWIW, I use non impact sockets with my impact. But it’s only a ~200 ft lb gun. If you’re using a beefier impact I would use impact rated sockets.

Try heating up the metal around the stud with a torch until it’s smoking hot, then douse with cold water. The thermal shock should help break the rust free.

I usually go to dealer parts websites to find OEM part numbers. They have diagrams for the majority of the vehicle.

Owned my car since 67k miles. At 178k now. It has zero service records since I do everything myself (save tires and alignments). Its condition speaks for itself. Would you rather buy a car that’s beat up with perfect service records or one that looks like it was well taken care of with no service records?

It’s not worth your time. To do it properly you would have to remove the calipers, mask them off, sandblast and paint them. The calipers on my car look like yours and they haven’t really changed in 5 years. It’s fine.

Are those the original rotors? Looks like rust has gotten underneath the coating and it’s flaking off. Probably not a big deal. How many miles on the brakes? The rotor wear looks not great.

Those aren’t speed bumps, they’re rumble strips meant to get your attention so you slow down. You could do 100 mph over these with no damage to your car.

No it’s not normal, something is screwed up.

Just remove the tail light and shake it out. Usually held in by a few 10mm nuts.

That’s your valve stem. If they damaged it they should replace it. Bring it back to the shop.

It’s not your thermostat. Is your car overheating (thermostat stuck closed) or running too cool (thermostat stuck open)?

Check the drain holes at the bottom of the doors for debris. You may have water trapped in one of the doors.

The worst that can happen is you spill your coffee hitting a bump. You are overthinking this.

At 100 MPH, you only need to add five drops of oil.

Have you checked if your front right caliper is in good shape?

No, in fact I always find it comical when people blatantly avoid the smallest bumps or potholes in their new car to “keep it in good shape”. Cars are designed with some seriously shitty roads in mind. In the VERY long term, yeah avoiding big bumps will make your suspension components last a little longer, but it’s nothing to consciously worry about.

They don’t come on when you turn on your headlights?

This should probably be in r/legaladvice, but you bought the car from a private party with no warranty expressed or implied, so my feeling is this would be headed to small claims court. Mechanically speaking, the gauge cluster was replaced with one from a lower mileage Corolla. You can’t roll back a digital odometer, as far as I know.

It’s always suggested to replace any suspension components in pairs. I would personally wait if the originals aren’t in such bad shape.