Active Height Control Relay (SU002-03)
Publication date: 2003-09-12Reference number: SU002-03
ACTIVE HEIGHT CONTROL RELAY
TECHNICAL SERVICE BULLETIN
| LEXUS: | 2002 - 2003 LX 470 |
| SECTION: | Suspension |
| COPYRIGHT: | © 2018 Lexus, a division of Toyota Motor Sales, USA License Agreement TMS1002 |
Introduction
Some 2002 and 2003 model year LX 470 vehicles may exhibit a flashing AHC (Active Height Control) "OFF" light with DTC C1743 in AHC ECU memory. A change has been made to the Active Height Control Main Relay to improve relay performance.
Applicable Vehicles
2002 - 2003 model year LX 470 vehicles produced BEFORE the Production Change Effective VIN shown below.
Production Change Information
| MODEL | PRODUCTION CHANGE EFFECTIVE VIN |
|---|---|
| LX 470 | JTJHT00W*33531873 |
Parts Information
| PREVIOUS PART NUMBER | CURRENT PART NUMBER | PART NAME | QTY |
|---|---|---|---|
| 90987-02004 | 89278-60010 | Relay, Height Control | 1 |
Warranty Information
| OP CODE | DESCRIPTION | TIME | OFP | T1 | T2 |
|---|---|---|---|---|---|
| SU3003 | Relay, Height Control | 0.2 | 90987-02004 | 95 | 54 |
This repair is covered under the Lexus Comprehensive Warranty. This warranty is in effect for 48 months or 50,000 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.
Repair Procedure
Refer to the Technical Information System (TIS) for Active Height Control Main Relay location and diagnostic procedures.
For Active Height Control Main Relay location:
Refer to 2002 or 2003 LX 470 Repair Manual: Diagnostics, Active Height Control Suspension & Adaptive Variable Suspension, Parts Location.
For Active Height Control Main Relay diagnostics:
Refer to 2002 or 2003 LX 470 Repair Manual: Diagnostics, Active Height Control Suspension & Adaptive Variable Suspension, C1743/43 AHC Main Relay.