Haltech TMS-4 Quick Start Manual page 8

TMS-4 MAINTENANCE
Battery Replacement - external sensors
The CR1632 battery used in the external pressure
sensors can be easily replaced.
1. Remove the sensor from the valve stem
2. Unscrew the cover from the sensor
3. Push the battery out of its holder
4. Gently push replacement battery in
5. Re-attach sensor to the valve stem
CR1632 batteries typically have a 1-2 year lifespan.
Battery replacement - internal sensors
The CR2023 batteries used in the internal tyre pressure
sensors are not replaceable.
These units have an average lifespan of 3 years, which
is longer than the average life of a tyre.
Low battery Voltage detection
A DTC will be triggered if any sensor battery falls below
2.3V. Individual battery voltages can be monitored by
the associated TMS-4 battery voltage channels.
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