On-Board Diagnostics: Introduction: Notes

The ZF5HP24 transmission is an electronically controlled, five speed unit for use with the V8 petrol engine. The transmission is manufactured by ZF Transmissions GmbH in Saarbrucken, Germany. The transmission is controlled by a Transmission Control Module (TCM) that contains software to provide operation as a semi-automatic STEPTRONIC transmission. The TCM allows the transmission to be operated as a conventional automatic unit by selecting Park, Reverse, Neutral, and Drive on the selector lever. Movement of the selector lever across the gate to the M/S position puts the transmission into electronic SPORT mode. Further movement of the lever in a lateral position to the + or - position puts the transmission into electronic manual COMMAND SHIFT mode.