Calibrate AHL (Xenon) (Saab 9-5)

This procedure will describe how to calibrate the AHL (Automatic Headlamp Leveling) for the Xenon headlights.

After changing the front and/or rear load angle sensor a calibration of AHL needs to be performed.

The calibration procedure is done separately for the left and right AHL control module.

Requirements

  • SAAB 9-5 with Xenon headlights
  • Tech2 (CANDi module for MY06 and newer)
  • SAAB 1XX.000 PCMCIA card

Preparations

Before carrying out the calibration make sure that the following criterias are fulfilled:

  • The car must be level
  • The car must be unladen
  • Stabilise the suspension by rocking the car
  • The handbrake must not be applied
  • The steering wheel and wheels must be in the straight-ahead position
  • Ignition switch in ON position
  • The xenon lamps must be turned on
  • Battery voltage must be >10.5 V

Procedure

  • Select F0: Diagnostics
  • Select Model year
  • Select Saab 9-5
  • Select F3: Body
  • Select AHL (Xenon)
  • Select F2: Programming
  • Select 2. AHL Left
  • Select Calibration
  • Press Yes (First make sure that you fulfill the criterias displayed on the screen, “- The vehicle must be put on level ground.” and “- The vehicle must be no load.”)
  • Press Yes when the Tech2 asks “Are you sure?”
  • When Tech2 says that the calibration was succesful, exit back to the programming menu.
  • Select 3. AHL Right
  • Select Calibration
  • Press Yes (First make sure that you fulfill the criterias displayed on the screen, “- The vehicle must be put on level ground.” and “- The vehicle must be no load.”)
  • Press Yes when the Tech2 asks “Are you sure?”