Toyota Yaris: Steering Pad / Removal
REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during the horn button assembly removal/installation are shown below.
HINT:
When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.
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Learning completes when vehicle is driven
Effect/Inoperative Function When Necessary Procedures are not Performed
Necessary Procedures
Link
Lane tracing assist system
Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.
Pre-collision system
Stop and start system
Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes)
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Learning completes when vehicle is operated normally
Effect/Inoperative Function When Necessary Procedures are not Performed
Necessary Procedures
Link
Power door lock control system
- Back door opener
Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.
Air conditioning system
After the ignition switch is turned to ON, the servo motor standard position is recognized.
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PROCEDURE
1. PRECAUTION
CAUTION:
Be sure to read Precaution thoroughly before servicing.
Click here
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal.
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2. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL
Click here
CAUTION:
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Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
- If the airbag deploys for any reason, it may cause a serious accident.
3. REMOVE HORN BUTTON ASSEMBLY
CAUTION:
- When storing the horn button assembly, keep the airbag deployment side facing upward.
- If the airbag deploys for any reason, it may cause a serious accident.
 | Deployment Side |
(a) Check that the ignition switch is off.
(b) Check that the cable is disconnected from the negative (-) auxiliary battery terminal.
CAUTION:
- Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
- If the airbag deploys for any reason, it may cause a serious accident.
(c) Using a screwdriver with its tip wrapped in protective tape, push in the torsion springs to disengage the pins as shown in the illustration.
NOTICE:
Do not drop the horn button assembly.
| *a | Lock Position | *b | Unlock Position |
| *c | Torsion Spring | *d | Pin |
| *e | Protective Tape | *f | View A |
| *g | View B | *h | View C |
HINT:
Insert the screwdriver into the installation areas of the lower No. 2 steering wheel cover and lower No. 3 steering wheel cover.
| (d) Tilt the horn button assembly toward the seat and support it with one hand. NOTICE:
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(e) Disconnect the airbag connector.
NOTICE:
When disconnecting any airbag connector, take care not to damage the airbag wire harness.
HINT:
Refer to How to Connect or Disconnect Airbag Connector:
Click here
(f) Disengage the wire harness clamp and disconnect the horn connector.
Components
C..
Installation
INSTALLATION PROCEDURE 1. INSTALL HORN BUTTON ASSEMBLY (a) Check that the ignition switch is off. (b) Check that the cable is disconnected from the negative (-) auxiliary battery terminal...
Other information:
Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Installation
INSTALLATION PROCEDURE 1. INSTALL WINDSHIELD WIPER RELAY ASSEMBLY (a) Engage the guides to install the windshield wiper relay assembly. (b) Install the bolt. Torque: 10 N·m {102 kgf·cm, 7 ft·lbf} (c) Connect the 2 connectors. 2. INSTALL POWER DISTRIBUTION BOX ASSEMBLY WITH MULTIPLEX NETWORK BODY ECU Click here 3...
Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Check Mode Procedure
CHECK MODE PROCEDURE CHECK MODE: DTC CHECK (a) Select "Check Mode" and proceed with checking using the GTS. Body Electrical > SRS Airbag > Utility Tester Display Check Mode NOTICE: Select Check Mode on the GTS to clear the DTCs (both current and history)...
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Front Seat Belt Pretensioners
The front seat belt pretensioners are designed to deploy in moderate or severe frontal, near frontal collisions.
In addition, the pretensioners operate when a side collision or a rollover accident is detected. The pretensioners operate differently depending on what types of air bags are equipped. For more details about the seat belt pretensioner operation, refer to the SRS Air Bag Deployment Criteria.
