ON-VEHICLE SERVICE
TSB Revision
WHEEL AND TIRE
31-43
"TIRE PRESSURE SENSOR ID REGISTRATION"
METHOD
1. Select "4tires ID Reg. (Change tire PRS.)" and start the tire
pressure sensor ID registration.
CAUTION
Register all tire pressure sensor IDs within twenty min-
utes.
2. "4 SNSR ID Registration Do you want to start? Note Finish
ID Registration within 20 minutes." is displayed. Then, press
"OK."
NOTE: If the ID code registration is not finished within 20
minutes, all the ID codes registered in the TPMS transmitter
before will be erased. For this reason, the ID codes need to
be registered again.
3. Decrease the tire pressure to 189 kPa (27.4 psi) or less by
changing 20 kPa (2.9 psi) or more, and register the tire
pressure sensor ID code of each wheel to ETACS-ECU
<vehicles without Keyless Operation System> or
KOS&OSS-ECU <vehicles with Keyless Operation
System>.
NOTE:
.
You can start out the following operations from any
TPMS transmitter. The tire pressure sensor ID registra-
tion has no order.
On completion of the tire pressure sensor ID code regis-
tration, the tire pressure sensor ID code is displayed on
the scan tool MB991958 screen.
scan tool MB991958 cannot identify which registered
TPMS transmitter is used for each wheel. For this rea-
son, write down the tire number for each wheel when the
tire number and ID code is displayed on the scan tool
MB991958 during ID code registration.
It may take approximately one minute for the ID code to
be displayed on the scan tool MB991958 screen after the
tire pressure is reduced.
If the ID code is not displayed, reduce the tire pressure
another 20 kPa (2.9 psi) or more. If the ID code is not
displayed yet, rotate the tire to displace the TPMS trans-
mitter, and reduce the tire pressure 20 kPa (2.9 psi) or
more again.
If the ID code cannot be registered for all the four
wheels, the ETACS-ECU <vehicles without Keyless
Operation System> or KOS&OSS-ECU <vehicles with
Keyless Operation System> may be faulty, thus replace
the ETACS-ECU <vehicles without Keyless Operation
System> or KOS&OSS-ECU <vehicles with Keyless
Operation System>.
If the ID code can be registered for one wheel or more,
the TPMS transmitter in which the code cannot be regis-
tered may be faulty, thus replace that TPMS transmitter.