Why doesn't PPF go over sensors?
Short answer
Because film can cause sensors to malfunction. Installers always cut around them, which is why you'll see small openings in the film on your bumper. Sensors can still be ceramic coated.
Quick facts
| Film over sensors | Never |
|---|---|
| Why | Film can cause sensors to malfunction |
| Sensor protection option | Ceramic coating |
What goes wrong if film covers a sensor?
Parking and driver-assist sensors need a clear path to work properly. A layer of film over them can cause them to malfunction. A small opening in the film is a fair trade for sensors that work.
Can sensors be protected another way?
Yes. A ceramic coating can go on sensors. It's thin and doesn't get in their way. See PPF or ceramic coating, or both?
How APC Auto Spa does it
APC uses vehicle-specific plotter patterns for most film and bulk film for custom work. Both methods leave sensors uncovered, and APC can ceramic coat sensors when you want them protected too.
Frequently asked questions
- Are the cutouts a sign of a poor install?
- No. Film should never go over sensors.
- Can I ask for film over my sensors anyway?
- APC doesn't put film over sensors because it can cause them to malfunction.
Reviewed by Heather Humphrey, co-owner of APC Auto Spa ยท Last updated October 2026
Heather leads customer education and training at APC's Tukwila and Monroe shops.