Tyson Boyer: Hi! I am Tyson Boyer with Dill Air Controls. Today I am going to talk about some vehicle applications that require unique tactics to troubleshoot and properly perform tire pressure monitoring relearn procedures.
There are quite a few vehicle applications that have changed their tire pressure monitoring sensor, valve stem components, or relearn during a single year of production. It is very important to review the trim package and production date as shown on the driver's door placard. For example, the regular Ford F150 is different from the F150 Heavy Duty. A Honda Odyssey equipped with a touring package is different from one without and a 2012 BMW 3-Series Sedan is different from the Coupe or Wagon. Asian vehicles equipped with intelligent keys also known as smart keys may require a different sensor from the remote keyless entry counterparts. If the vehicle can be started via push button without inserting the key or fob, then the vehicle is equipped with a smart key system.
To perform a relearn on select 2013 model year in New York Toyota RAV4s or Highlanders, an OBD2 scan tool is required. Caution, verify that your TPMS scan tool is able to register sensors to the smart key equipped models. This new technology is not available on some scan tools. It is important to perform a relearn when conducting any one or more of the following procedures. Rotating the tires, replacing one or more sensors, servicing and replacing tires, adjusting the air pressure, if your vehicle is equipped with indirect TPMS.
Completing the vehicle's specific relearn procedure ensures full functionality of the system. Removal of old sensor data, previous tire pressure values and elimination of TPMS related diagnostics trouble codes, proper operation of the dashboard warning lights, correct tire location and air pressure readings if applicable and the industry supports performing a relearn when conducting tire service on a vehicle where the TPMS is altered or changed.
The 2014 BMW 2-Series owners' manual states reset the system after each correction of the tire inflation pressure and after every tire or wheel change. The 2015 Chevrolet Silverado owners' manual says, the tire positions must be relearned after rotating the tires or after replacing a tire or sensor and a 2015 Subaru Impreza owners' manual reads system resetting is necessary when the wheels are changed. For example, a switch to snow tires and new TPMS valves are installed on the newly fitted wheels.
You may not be able to successfully complete the relearn on the vehicle if any of the following have taken place. Certain aftermarket tires or wheels are installed, for example, select run flat tires for deep dish wheels. The spare tire is on the vehicle, the sensor is damaged, installed incorrectly or missing. The vehicle has custom body panels racks, storage compartments or other possible aftermarket additions that could lead to interference between the wheel-mounted sensor and the receiver. An electronic device that transmits the same or similar radiofrequency as the TPMS is within close proximity of the vehicle, or the tire pressure is not set to the door placard rating for the current load entire size.
These are some of the common troubleshooting and performance tactics used for relearn procedures. Just remember to always verify the proper part for the application you are working on before installing and follow all instructions that are provided with replacement TPMS components.