Tire Monitoring System: Description and Operation

Tire Pressure Monitoring System (TPMS) - option on certain U.S. models only
The tire pressure monitoring system uses sensors mounted in the tire valves to check inflation pressure levels. When the vehicle is moving at a speed of 20 mph (30 km/h) or faster, these sensors transmit inflation pressure data to a receiver located in the vehicle.

USA - FCC ID: MRXTG315AM04
This device complies with part 15 of the FCC rules. Operation is subject to the following conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

WARNING
The TPMS system uses a radio frequency of 315 MHz. Accessory electrical equipment using the same frequency could interfere with TPMS and should not be installed in the vehicle. Please consult your Volvo retailer, a qualified Volvo service technician, or the accessory equipment's supplier for further information.

Operation
When low inflation pressure is detected, TPMS will light up the tire pressure warning light (also referred to as a telltale) in the instrument panel, and will display a message in the text window. The wording of this message is determined by the degree of inflation pressure loss.

When the tire pressure monitoring system warning light is on, one or more of your tires is significantly under-inflated. You should stop and check your tires as soon as possible, and inflate them to the proper pressure as indicated on the vehicle's tire information placard.

Driving on a significantly under-inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability. Each tire, including the spare, should be checked monthly when cold and set to the recommended inflation pressure as specified in the vehicle placard and owner's manual.

NOTE if a fault occurs in TPMS, the tire pressure warning light will flash for approximately 1 minute and "TIRE PRESS SYST SERVICE REQUIRED" will be displayed.

Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire inflation pressure label. (If your vehicle has tires of a different size then size indicated on the vehicle placard or tire inflation label, you should consult the appropriate section of the owner's manual to determine the proper tire inflation pressure.) When the low tire pressure telltale is illuminated, one or more or your tires is significantly underinflated. You should stop and check your tires as soon as possible, and inflate them to proper pressures. Driving on a significantly underinflated tire causes tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability.

Your vehicle has also been equipped with a TPMS malfunction telltale to indicate when the system is not operating properly. When the malfunction telltale is illuminated, the system may not be able to detect or signal low tire pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of incompatible replacement tires on the vehicle. Always check the TPMS malfunction telltale after replacing one or more tires on your vehicle to ensure that the replacement tires are compatible with the TPMS.

NOTE: TPMS indicates low tire pressure but does not replace normal tire maintenance. For information on correct tire pressure, please refer to the pressure table in the owner's manual, or consult your Volvo retailer.

Erasing warning messages
When a low tire pressure warning message has been displayed, and the tire pressure warning light has come on:

1. Use a tire pressure gauge to check the inflation pressure of all four tires.

2. Re-inflate the tire(s) to the correct pressure (consult the tire pressure placard or the pressure table of the owner's manual).

3. Drive the car for at least one minute at a speed of 20 mph (30 km/h) or faster.

This will erase the warning text and the warning light will go out.

WARNING!
Incorrect inflation pressure could lead to tire failure, resulting in a loss of control of the vehicle.

Changing tires
Please note the following when changing or replacing the factory installed TPMS wheels/tires on the vehicle:

- Only the factory-mounted wheels are equipped with TPMS sensors in the valves.

- If the vehicle is equipped with a temporary spare tire, this tire does not have a TPMS sensor.

- If, for example, winter wheels/tires are used that are not equipped with TPMS sensors, the message "TIRE PRESSURE SYSTEM SERVICE REQUIRED" will be displayed after the car has been driven for several minutes at approximately 35 mph (50 km/h) or faster.

- This message will remain on until wheels with TPMS sensors are mounted on the vehicle and it has been driven for at least one minute at a speed of 20 mph (30 km/h) or faster.

- TPMS valves can be fitted on winter wheels or full-size spare wheels/tires. Consult your Volvo retailer.

CAUTION!
When inflating tires with TPMS valves, press the pump's mouthpiece straight onto the valve to help avoid bending or otherwise damaging the valve.