Hardware disassembly | BMW Motorrad | Engine control unit (ECU)

Tools:

• TX25
• Side cutter
• Screwdriver

Procedure:

watch video (click on figure)

Tools:

• TX25

Procedure:

Tools:

• TX25
• Side cutter
• 2x Cable ties for installation

Procedure:

1. 5x / 7x (depending on the model) loosen the TX25 screws on the front tank cover and remove the front tank cover
2. 1x remove TX25 screw from ECU frame
3. Disconnect plug connection to secondary air pump (small plug to the right of the ECU)
4. Pull off left tank breather hose and slightly pull ECU together with plastic frame a bit to the front
5. Cut 2x cable ties which secures plastic frame together with engine wiring harness
6. Pull off 2x ECU connector (sliding mechanism)
7. Unclip ECU from plastic frame

Tools:

• TX25
• TX30
• side cutter
• 1x cable tie for installation

Procedure:

1. Remove seat
2. 1x Remove the TX25 screw from the scuff guard behind the fuel tank and pull off the scuff guard to the rear
3. 1x Release TX25 fixing screw (front inside over radiator) for painted left-side trim
4. Unclip the painted trim on the left and remove
5. Loosen 8x TX25 fixing screws of left unpainted panel
6. Release left turn signal cable
7. Lever out left unpainted panel and secure against folding down (eg with expander or wire)
8. Release connector below ECU
9. Unscrew 3x TX30 screw which connect ECU frame with vehicle frame
10. Pull the ECU frame slightly down and pull off the ECU connector (sliding mechanism, first remove the smaller one)
11. Release ECU from lower two clips of plastic frame and pull ECU out of frame

Tools:

none

Procedure:

watch video (click on figure)

Tools:

• none

Procedure:

      0. Remove seat

1. Unclip ECU from bracket on right side
2. Unclip ECU from bracket on rear left side and turn ECU to left side
3. Release the small ECU connector by pulling the locking devices in rear direction
4. Release the big ECU connector by pulling the locking devices in front direction

Tools:

• TX25
• TX30
• TX45

Procedure:

Tools:

• TX25
• TX40
• side cutter
• Socket wrench SW10
• 1x cable tie for installation

Procedure:

1. Remove seat
2. *Loosen 4x TX40 screw from luggage rack
3. *Loosen 4x TX40 screw from rear upper shell
4. Detach 2x TX25 from control unit carrier
5. Disconnect 1x cable tie
6. Unplug fuses and keyless antenna
7. Disconnect lights control unit
8. Pull off the SAF control unit
9. Loosen 2x TX25 and remove battery holder
10. Optional for better accessibility: Detach the negative cable from the battery (SW10) and remove the battery (positive cable can remain if the battery is only tilted to the side as shown in the picture)
11. Disconnect 2x cable ties on the control unit carrier behind the battery, unclip the ECU from the carrier downwards and pull out the carrier backwards
12. Loosen the ECU connector and pull out ECU to the rear

*) only necessary if bike is equipped with this components

Video on the removal and installation of George Portz here

Tool:

• TX25

Procedure:

1. Remove front right side panel (including the upper right panel on the right side of the fuel tank).
2. Loosen rubber band (A) and hang SAF control unit (suspension controler) to the side
   This step is not required for model 2022+!
3. Disconnect plug from control unit basic module (B) by pulling lock (a) in direction of arrow
   This step is not required for model 2022+!
4. Loosen 2x screw from control unit frame (b) with TX25
5. Pull coolant expansion tank (C) out of control unit frame and hang to the side. If there is an additional screw (a) which hold the coolant expansion tank please remove it as well.
   Attention: Turn coolant tank so that no coolant leaks out.
6. Pull off both connector from engine control unit (E) by pulling on latch in arrow direction (e)
7. Lift frame of engine control unit (E) and remove engine control unit from vehicle by pulling in downwards direction. To get better access to ECU an its holding brackets, you can remove upper screw from its frame (b2) as well and manouver the ECU such that better access can be obtained