With Manufacturer's Scan Tool

Engine Control Module (ECM), Coding

NOTE:
- A 5-character code must always be displayed during the control module identification.
- The control module must be recorded if the vehicle relevant coding is not displayed or the control module has been replaced.


Special tools and equipment
VAG1551 Scan Tool (ST) with VAG1551/3 adapter cable

Test sequence
- Connect VAG1551 (VAG1552) Scan Tool (ST).
- Switch ignition on and press buttons -0- and - 1- to insert "Engine Electronics" address word 01.

Indicated on display


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -7- to select "Code Control Module" function 07 and press -Q- button to confirm input.

Indicated on display


Code Control Module
Enter code number XXXXX (32000)


- Enter relevant code number for vehicle and press -Q- button to confirm input.

Coding variants:

Coding Vehicle
00031 Manual Transmission
00033 Automatic Transmission

The control module identification and coding are indicated on the display, (example)


0219060186 MOTRONIC ME7.1G V06 ->
Coding 00000 WSC 00000


Indicated on display when a non-authorized code number has been entered


Function is unknown or ->
cannot be carried out at the moment.


- Press -> button.
- Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.
- Switch ignition off.
- Check DTC memory. If necessary, repair any malfunctions and erase DTC memory.
- Display readiness code.

If DTC memory has been erased or the Engine Control Module (ECM) was disconnected from permanent battery (B+) voltage, the readiness code must be generated again.


NOTE:
The code entered and shown on the display will not be used by the Motronic control module until the ignition has been switched off once. An incorrect coding leads to:
- Engine running malfunctions (rough gear changes, load change jerks, etc.).
- Increased fuel consumption.
- Increased exhaust gas emissions.
- Malfunctions stored in DTC memory which are not actually present.
- Functions will not be performed (Oxygen Sensor (O2S) control, activation of the EVAP system, etc.).
- On front wheel drive vehicles the traction control will not function (TC warning lamp comes on).
- Reduced Transmission life.