Engine Control Module (ECM), replacing

Work procedure 

• First, print out the old control module identification, and thus also its coding → Engine control module DTC memory, checking and erasing  , DTC memory of Engine Control Module (ECM), checking and erasing.

• Switch off ignition.
• Remove wiper arms and cowl → 92 - WINDSHIELD WIPER AND WASHER SYSTEM .

Fig 1: Identifying Engine Control Module (ECM) Protective Housing

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• Remove cover of protective housing for control units.

Fig 2: Removing Engine Control Module

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• Carefully pry off the retainer bar with a screwdriver - arrow  -.
• Disengage connector from control module and then disconnect it.
• Remove old control module and install the new control module.
• The new control module must be coded, and the electronic anti-theft immobilizer and the throttle valve control module must be adapted. Activate the cruise control system if necessary → Adapting functions and components 

• Check DTC memory of new Engine Control Module (ECM) and erase if necessary → Engine control module DTC memory, checking and erasing 
• After erasing DTC memory, readiness code must be generated again → Adapting functions and components 
• Carry out test drive.

Observe safety precautions that apply to road tests → Safety precautions  .

• Check control module DTC memory again.