Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the...

Bulletin number

L-SB-0036-22 Rev2 (L-SB-0036-22 Rev2)

Component

Electrical system

Summary

Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Global Techstream+ (GTS+) ECU flash reprogramming procedures and outlines use of the Technical Information System (TIS) and the Calibration Update Wizard+ (CUW+). To ensure the correct ECU software is installed, ECUs will require a Security Signature before the ECU will initialize the flash reprogramming sequence. This bulletin also details the process for acquiring a Security Signature from TIS during the GTS+ ECU flash reprogramming process.

Owners of these vehicles have filed 96 complaints in the electrical category.