Question

Technician A says initializing the TPW ECU with hot tires set to the recommended pressure can

result in a low tire pressure warning when the vehicle is driven with cold tires.
Technician B says low tire pressure warnings can be prevented in cold weather by first initializing
the TPW ECU with the tires set to the recommended pressures, then increasing the tire pressure
to compensate for the decrease in pressure caused by cold temperature.
Who is right?
Select the correct option and click NEXT.
O A only
O B only
Both A and B
Neither A nor B

Answer 1

Both A and B are correct.

Technician A is right because initializing the TPW ECU with hot tires set to the recommended pressure may lead to a low tire pressure warning when the tires cool down, as the pressure decreases in cold conditions.

Technician B is also correct. To prevent low tire pressure warnings in cold weather, you should initialize the TPW ECU with tires at recommended pressures and then increase the tire pressure to compensate for the expected decrease caused by the cold temperature. This approach helps maintain the desired pressure level even as the tires cool down.