Lighting - Automatic Headlamp Leveleing Lamp Flashing
ELECTRICALEL004-06
April 28, 2006
Title:
AUTOMATIC HEADLIGHT LEVELING SYSTEM WARNING LIGHT "ON" OR FLASHING
Models:
'04 - '05 Prius W/HID Headlights
Introduction
Some Prius vehicles, equipped with High-Intensity Discharge (HID) headlamps and an Automatic Leveling Light system, may experience a Master Warning Light and Automatic Headlight Leveling System Warning Light "ON" or flashing at times. An improved rear vehicle height control sensor has been introduced to correct this condition.
Applicable Vehicles:
^ 2004 - 2005 model year Prius vehicles equipped with an Automatic Headlight Leveling System.
Required SSTs
NOTE:
Additional Diagnostic Tester Kits, CAN Interface Modules, Program Cards, or other SSTs may be ordered by calling SPX-OTC at 1-800-933-8335.
Warranty Information
Applicable Warranty:
This repair is covered under the Toyota Comprehensive Warranty. This warranty is in effect for 36 months or 36,000 miles, whichever occurs first, from the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Parts Information
Parts Identification
Countermeasure service parts can be identified by the letter "G" printed on the part number label.
Repair Procedure
1. Confirm the vehicle condition.
2. Remove and replace the rear height control sensor.
Refer to the Technical Information System (TIS), 2004 or 2005 model year Prius Repair Manual: Lighting: Height Control Sensor Sub-Assy Rear: Replacement.
3. Perform the Headlight Leveling ECU Initialization procedure using the SST.
^ SST P/N: 09843-18040
Refer to TIS, 2004 or 2005 model year Prius Repair Manual: Diagnostics: Lighting System: Initialization.
4. Perform the Headlight Aim Only procedure.
Refer to TIS, 2004 or 2005 model year Prius Repair Manual: Lighting: Headlamp Assy: Adjustment.
5. Confirm that the headlight leveling system is operational and all codes have been cleared from the vehicle.