Enabling/Disabling The Hazard ANSWERBACK 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 the "LOCK" (OFF) position.
   2. Turn off the hazard warning light switch.
   CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502.
   Fig 1: Connecting Scan Tool To Data Link Connector Terminal
   Courtesy of DAIMLERCHRYSLER CORP.
   Fig 2: Identifying Data Link Connector Terminals
   Courtesy of DAIMLERCHRYSLER CORP.
   3. Connect scan tool MB991502 to the data link connector terminal (1).
   4. Close the driver's side door.
   5. Keep the windshield washer switch on for at least ten seconds. Then the ETACS-ECU tone alarm will sound once.
2. If the transmitter "LOCK" switch 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" switch 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.
      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" switch while holding the "UNLOCK" switch pushed for four to ten seconds.
3. If the "LOCK" switch and "UNLOCK" switch 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" switch and "LOCK" switch 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 door 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.