Notes on stage 2 drive authorization system
The stage 2 drive authorization system is only activated by the RCL control module via the CAN data bus to the IFI control module.
After the stage 2 drive authorization system has been activated, the IFI control module renders the injection system inoperative. This stage 2 drive authorization system can only be activated and deactivated with the RCL remote control. Locking and unlocking the vehicle with the mechanical key has no effect on the stage 2 drive authorization system.
The IFI control module and the RCL control module are permanently interlocked by an identification code. This identification cannot be erased (refer to HHT actual values "Drive authorization system" menu item 3/7). It is therefore not possible to replace the IFI or RCL control module in another vehicle on a trial basis.
If a new IFI control module is installed for test purposes, a maximum of 40 starting operations only may be carried out, otherwise the IFI control module locks the identification. A new identification with this control module is therefore no longer possible.
Before starting for the first time, variant coding must be carried out on the IFI control module using the HHT. The identification must be introduced after this.
The VIN number is also entered in the IFI control module when locking.
Variant coding with HHT
a) Variant coding can only be performed automatically and manually with the Hand-Held Tester, refer to (menu item 5 "Variant coding").
Automatic
Before removing the IFI control module, read out the existing code number with the HHT. When the new control module has been installed, input the stored code number (menu-guidance in HHT).
Manual
If the code number cannot be read out, the vehicle version must be established. The appropriate code number can be obtained from the parts microfilm, Group 54 and is input manually with the HHT.
Take the following vehicle versions into account when coding:
Vehicle model
5-speed automatic transmission with cruise control
The code number must be erased when the new control module is returned to the Parts Store.
It is not possible to install a control module from another vehicle on a trial basis.
It is possible to install a control module from the Parts Store on a trial basis.