Topic
TPMS, battery and service resets
Many routine jobs end with a reset: a TPMS sensor relearn, a battery registration, an oil service reminder or a brake service mode. Some cars need a scan tool for each of them.
- Lamps
- TPMS, battery or charging, service reminder
The TPMS light comes on when a tire is low or when the system cannot hear a sensor. After new sensors or a tire rotation, many vehicles need a relearn so the computer knows which sensor sits at which wheel. Some do it by driving, some need a TPMS tool to wake each sensor.
Many newer vehicles with a battery monitoring system expect a battery registration after a new battery is fitted, so the charging system adjusts to the new battery's age and type. A red battery light while driving is different: it means the charging system is not keeping up, and the car may run only until the battery is drained.
Electronic parking brakes often need a service mode that retracts the rear calipers before the pads can be replaced, and oil life monitors need a reset after an oil change. The owner's manual shows whether your car can do these from the dashboard.
Common mistakes
- Forcing back electronic parking brake pistons without putting the system in service mode.
- Skipping battery registration on a vehicle that requires it.
- Ignoring a TPMS light because the tires look fine.
Pages on this topic
- TPMS relearn: the three methods and when each appliesTPMS relearn explained: auto, stationary and OBD relearn methods, when your car needs one, and why the TPMS light stays on after a tire rotation or new sensor.How-to
- Battery registration after replacement: which cars need itBattery registration tells a car's charging system a new battery is installed. Which cars need it, including BMW, what happens if you skip it, and how to do it.Explainer
- Autel TS508WF vs TS408 TPMS toolsAutel TS508WF vs TS408 compared from the listings: sensor activation, relearn options, MX-Sensor programming, updates and price, with a clear verdict.Comparison
Gear for this topic
- Best TPMS relearn and sensor programming toolsTPMS tools compared by sensor activation, relearn methods, MX-Sensor programming, extra scan functions and the update terms each listing states.Gear guide
- Best heavy duty and diesel truck scanners with DPF regenHeavy duty truck scanners compared by DPF regen support, J1939/J1708 protocols, connectors, engine coverage (Cummins, Detroit, PACCAR) and update terms.Gear guide
- Best battery testers with built-in diagnosticsBattery testers compared by CCA range, cranking and charging tests, built-in scan functions, battery registration and the update terms each listing states.Gear guide