13 61 501 Replacing (DDE) control unit (N47 D20 O1)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Read and comply with NOTES on protection against electrostatic damage (ESD protection).

Necessary preliminary work:

Read out the fault memory of the DDE control unit.
Switch off ignition.
Disconnect BATTERY EARTH LEAD .
FOLLOW INSTRUCTIONS FOR REMOVING AND INSTALLING CONTROL UNITS .

Replacement:

Carry out programming/encoding.
If no data can be read out from the previous control unit, carry out injection quantity compensation (description at end of instructions).

IMPORTANT: It is absolutely essential to read out the fault memory with the BMW diagnosis system and to create a fault memory printout.

Switch off ignition.

Release screws (1).

Detach coolant hose from cover of electronics box.

Remove electronics box cover (3).

Fig 1: Identifying Electronics Box Cover And Screws

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Unlock all connectors (1) from control unit and disconnect.

Detach rubber grommets (2) from electronics box. Place wiring harnesses to the side.

Installation note:

Make sure grommets are correctly fitted (watertightness).

Fig 2: Identifying Connectors And Rubber Grommets

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Release retainers (1) on control unit.

Pull out control unit (2) towards top.

Fig 3: Identifying Retainers And Control Unit

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Injector adjustment:

If the DDE control unit has been replaced, it will also be necessary to carry out injection quantity compensation!

The adjustment value (7-position letter/number code) is engraved on each injector.

Enter the numbers/letters according to the installation position (cylinder) of the injectors.

Fig 4: Identifying Injector Number Code

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Select "DDE".
Select "Adjustment, injection quantity compensation"
Select "Test plan"

The adjustment must be entered for each injector.

It is necessary to adjust the injectors to ensure their full operability.

NOTE: Check stored fault messages.
Delete fault memory.