What a joke! I am too old to do a tire calibration as listed in the owners manual. They must be kidding. I would rather look at a error light that do a calibration. For me the TPMS warning will be on for 40,000 miles for every 50,000 miles driven anyway. I rotate all 5 tires and the spare does not have a sending unit. I bought the optional wheel covers option because then the wheels are painted black instead of silver. The spare is on a black wheel. So now I can rotate all 5 tires all are on black wheels.
I did manually check my tire pressures and they were inflated to the specification on the door frame. Van is empty so the rear tires should not be at 71 psi. I lowered the rear tire pressure to 60 psi and expected to see a warning light but did not. So the warning light is actuated when tire pressure is more than 10 psi low.
I did manually check my tire pressures and they were inflated to the specification on the door frame. Van is empty so the rear tires should not be at 71 psi. I lowered the rear tire pressure to 60 psi and expected to see a warning light but did not. So the warning light is actuated when tire pressure is more than 10 psi low.