A minor dent or ding in a car's body can often be repaired yourself; you might be able to simply bump it out with a rubber mallet and apply some touchup paint, and then be on your way. However, not all smash repairs are that simple, and there are some that should never be handled by someone without the right experience and knowhow. Consider a few of those here and why it's better to always have a professional handle these repairs for you.
1. Bent windshield frame
If your car's windshield frame has been bent in an accident, you don't want to try to simply bend it back yourself before installing a new windshield. This is because the windshield provides more safety than you may realize; it keeps you and passengers from flying out of the car in case of an accident and supports the roof of the car during a rollover. If the windshield frame is bent and not repaired properly, this can compromise its overall strength. In turn, the windshield might shatter during a rollover so that the car is more likely to be crushed, or might simply give way if you were to hit it during a collision.
2. Damage to the brake lights
If a collision has damaged the brake lights, you don't want to assume you can just replace these and be on the road again. If the wiring behind the lights can come loose or is otherwise damaged, this can be very dangerous for you. They may work when you first test them after making your own repairs but if you don't perform a thorough test of all the connectors and wiring connected to the brake lights, the lights could fail after being exposed to normal vibrations. This could increase your risk of an accident because of having your brake lights fail.
3. Oil drips
If you notice an oil leak after a collision, you don't want to try to fix the leaking area yourself. Your car engine's oil is very important for lubrication as well as for keeping it cool, and even a small leak can mean excess wear and tear on the engine. If you don't manage to fix the leaking part properly, it could simply get worse over time so that the oil levels suddenly dip too low and your engine seizes up. If a collision has causes damage to the oil pan or other such part, have these repaired or replaced by a professional so you know your car is protected.