FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Programming and Relearning

Enabling/Disabling the Answerback Function

If the keyless entry system locks or unlocks the doors, the dome light flashes or illuminates, the hazard warning light flashes (hazard answerback function) and the horn sounds (horn answerback function). The hazard and horn answerback functions can be enabled or disabled according to the following procedure.

Enabling/Disabling the Hazard Answer Function

The hazard answerback function can be enabled or disabled by one of the two following procedures.

[WHEN THE TRANSMITTER IS USED AFTER CONNECTING SCAN TOOL MB991502 TO THE DATA LINK CONNECTOR OR GROUNDING DATA LINK CONNECTOR TERMINAL (1)]










1. Enter the hazard answerback customize mode by observing one of the following steps. If the ETACS-ECU enters the customize mode, its tone alarm will sound once.

1. Turn the ignition switch to "LOCK"(OFF) position.
2. Turn off the hazard warning light switch.
3. Connect scan tool MB991502 to the data link connector terminal (1).
4. Close the driver's side door.
5. Leave the windshield washer switch on for at least ten seconds. Then the ETACS-ECU tone alarm will sound once.

2. If the transmitter "LOCK" button is pushed consecutively twice (within two seconds), the ETACS-ECU tone alarm will sound, indicating that the hazard answerback function can be enabled or disabled when the doors are locked.
- Enable the hazard answerback function when the doors are locked: The ETACS-ECU tone alarm will sound once.
- Disable the hazard answerback function when the doors are locked: The ETACS-ECU tone alarm will sound twice.

3. If the transmitter "UNLOCK" button is pushed consecutively twice (within two seconds), the ETACS-ECU tone alarm will sound, indicating that the hazard answerback function can be enabled or disabled when the doors are unlocked.
- Enable the hazard answerback function when the doors are unlocked: The ETACS-ECU tone alarm will sound once.
- Disable the hazard answerback function when the doors are unlocked: The ETACS-ECU tone alarm will sound twice.

4. Exit the hazard answerback customize mode by observing one of the following steps.
1. Disconnect scan tool MB991502 from the data link connector, or disconnect data link connector terminal (1) form the ground.
2. Turn the ignition switch to position other then "LOCK"(OFF), or remove the ignition key.
3. Open the driver's side door,
4. Any other warning tone alarm output occurs

NOTE: If any operation is not done for at least three minutes after the ETACS-ECU has entered the customize mode, the hazard answerback customize mode will be canceled automatically.


[WHEN ONLY THE TRANSMITTER IS USED]
1. Remove the ignition key.
2. Push the "LOCK" button while holding the "UNLOCK" button pushed for four to ten seconds.
3. If the "LOCK" button and "UNLOCK" button are released in that order, the ETACS-ECU tone alarm will sound, indicating that the hazard answerback function can be enabled or disabled when the doors are locked.
- Enable the hazard answerback function when the doors are locked: The ETACS-ECU tone alarm will sound once.
- Disable the hazard answerback function when the doors are locked: The ETACS-ECU tone alarm will sound twice.

4. If the "UNLOCK" button and "LOCK" button are released in that order, the ETACS-ECU tone alarm will sound, indicating that the hazard answerback function can be enabled or disabled when the doors are unlocked.
- Enable the hazard answerback function when the doors are unlocked: The ETACS-ECU tone alarm will sound once.
- Disable the hazard answerback function when the doors are unlocked: The ETACS-ECU tone alarm will sound twice.



Enabling/Disabling the Horn Answerback Function

[WHEN ONLY THE TRANSMITTER IS USED]
1. Remove the ignition key.
2. Push the "UNLOCK" button while holding the "LOCK" button pushed for four to 10 seconds.
3. If the "LOCK" button and "UNLOCK" button are released at the same time, the ETACS-ECU tone alarm will sound, indicating that the horn answerback function can be enabled or disabled.
- Enable the horn answerback function: The ETACS-ECU tone alarm will sound once.
- Disable the horn answerback function: The ETACS-ECU tone alarm will sound twice.

4. If the "LOCK" button and "UNLOCK" button are released at the same time, the ETACS-ECU tone alarm will sound, indicating that the horn answerback function can be enabled or disabled.
- Enable the horn answerback function*: The ETACS-ECU tone alarm will sound once.
- Disable the horn answerback function: The ETACS-ECU tone alarm will sound twice.
- Enable the horn answerback function**: The ETACS-ECU tone alarm will sound three times.

NOTE: * The horn will sound if the doors are locked with the keyless entry system.
** The horns sound when the other doors are locked by the keyless entry system with some door(s) has been locked.