Drive Authorization System (DAS)

DAS is activated from DAS control module through the Controller Area Network (CAN) data bus to the ME-SFI control module. When DAS is activated, the ME-SFI control modules render fuel injection system inoperative. See DAS VERSION  table to identify model/version usage.

DAS 2a activation or deactivation is accomplished with the electronic key. When electronic key is inserted into the ignition lock, DAS 2a control module is activated. Locking or unlocking vehicle using mechanical key has no effect on DAS. The ME-SFI control modules and DAS control module are "married" to one another with identification codes. Identification codes cannot be erased. Switching an ME-SFI control module(s) or DAS module form one vehicle to another is not possible. If an exchange ME-SFI control module(s) is installed for test purposes, up to 40 start attempts can be performed before ME-SFI control module(s) and DAS control module "marry" to one another. Prior to performing first engine start, ME-SFI control module(s) must be version coded to vehicle using scan tool. See VERSION CODING  .