WHEEL UNIT ID REGISTRATION CANNOT BE PERFORMED

id020300000500

Caution

• Activate the wheel unit ID registration mode using the M-MDS, and perform the following steps if the TPMS warning light does not turn off after driving at 25 km/h {16 mph} or more for 10 min or more.

Troubleshooting item

Wheel unit ID registration cannot be performed

Description

•  TPMS warning light flashes

Possible cause

•  New wheel unit malfunction (caused when installing to wheel)

•  Any malfunction on an old wheel unit which has not been replaced.

Troubleshooting item	Wheel unit ID registration cannot be performed
Description	• TPMS warning light flashes
Possible cause	• New wheel unit malfunction (caused when installing to wheel) • Any malfunction on an old wheel unit which has not been replaced.

Diagnostic Procedure

STEP

INSPECTION

ACTION

1

VERIFY WHEEL UNIT ID

•  Display the wheel unit ID registration condition (ID and tire pressure table) using the M-MDS.

•  Temporarily remove the battery and reinstall it immediately.

Note

•  If the battery is removed, the tire pressure data for WU_1 to WU_4 stored in the instrument cluster is reset.

•  Pressure is 0 kPa {0 kgf/cm², 0 psi}when it is displayed again using the M-MDS.

•  Set the tire pressure for the four wheels separately.

•  Perform the wheel unit ID registration again.
(See WHEEL UNIT ID REGISTRATION.)

•  Can the wheel unit ID be registered?

Yes

Symptom troubleshooting completed.

Adjust the tire pressure on four wheels, then return the vehicle to the customer.

(See TIRE PRESSURE ADJUSTMENT (WITH TPMS).)

No

Go to the next step.

2

IDENTIFY UNREGISTERED WHEEL UNIT

•  Identify the malfunctioning wheel unit.
(See MALFUNCTIONING WHEEL UNIT IDENTIFICATION.)

•  Is the wheel unit for which the ID could not be registered a new wheel unit?

Yes

Replace with a new wheel unit, then go to Step 4.

(See WHEEL UNIT REMOVAL/INSTALLATION.)

No

Go to the next step.

3

Replace the old wheel unit, then go to the next step (any malfunction on an old wheel unit which has not been replaced).

(See WHEEL UNIT REMOVAL/INSTALLATION.)

4

VERIFY WHEEL UNIT ID

•  Perform the wheel unit ID registration using the M-MDS.
(See WHEEL UNIT ID REGISTRATION.)

•  Can the wheel unit ID be registered?

Yes

Symptom troubleshooting completed.

No

Verify troubleshooting again and return to Step 1 if the malfunction recurs.

STEP	INSPECTION		ACTION
1	VERIFY WHEEL UNIT ID • Display the wheel unit ID registration condition (ID and tire pressure table) using the M-MDS. • Temporarily remove the battery and reinstall it immediately. Note • If the battery is removed, the tire pressure data for WU_1 to WU_4 stored in the instrument cluster is reset. • Pressure is 0 kPa {0 kgf/cm², 0 psi}when it is displayed again using the M-MDS. • Set the tire pressure for the four wheels separately. • Perform the wheel unit ID registration again. (See WHEEL UNIT ID REGISTRATION.) • Can the wheel unit ID be registered?	Yes	Symptom troubleshooting completed. Adjust the tire pressure on four wheels, then return the vehicle to the customer. (See TIRE PRESSURE ADJUSTMENT (WITH TPMS).)
1		No	Go to the next step.
2	IDENTIFY UNREGISTERED WHEEL UNIT • Identify the malfunctioning wheel unit. (See MALFUNCTIONING WHEEL UNIT IDENTIFICATION.) • Is the wheel unit for which the ID could not be registered a new wheel unit?	Yes	Replace with a new wheel unit, then go to Step 4. (See WHEEL UNIT REMOVAL/INSTALLATION.)
2		No	Go to the next step.
3	Replace the old wheel unit, then go to the next step (any malfunction on an old wheel unit which has not been replaced). (See WHEEL UNIT REMOVAL/INSTALLATION.)
4	VERIFY WHEEL UNIT ID • Perform the wheel unit ID registration using the M-MDS. (See WHEEL UNIT ID REGISTRATION.) • Can the wheel unit ID be registered?	Yes	Symptom troubleshooting completed.
4		No	Verify troubleshooting again and return to Step 1 if the malfunction recurs.