BMW X5 M (E70) V8-4.4L Turbo (S63) Technical Service Bulletin # 121709 Date: 110501
Electrical - Various Electrical/Driveability/DTC Issues
SI B12 17 09
Engine Electrical Systems
May 2011
Technical Service
This Service Information bulletin supersedes SI 12 17 09 dated March 2010.
[NEW] designates changes to this revision
SUBJECT
BMW X5 M (E70) V8-4.4L Turbo (S63) Page 252
Water Is Leaking into the Electronics Box
MODEL
[NEW] E70, E71, and E72 produced from 10/1/06 to 12/14/10
SITUATION
Any of the following situations could occur if water has entered the electronics box:
^ The engine is hard to start or will not start.
^ The engine goes into emergency mode operation.
^ The battery is discharged.
^ Various Check Control messages are displayed.
^ [NEW] Various control units listed below may fail to enter sleep mode.
^ [NEW] DME, DDE, DSC, EGS, EKP, GWS, AFS, ARS, AMP, PGS
^ Various DME faults are stored or the DME is not recognized in an ISTA diagnostic session.
CAUSE
Water inside the electronics box could result in damage to the DME/DDE module and wiring plug-in contacts.
CORRECTION
Check for water ingress into the electronics box.
If water is present, the following steps must be carried out to determine the necessary repairs.
Begin by removing the right front cowl components and the electronics box lid, and refer to the illustration below.
1. Visually inspect the vehicle wiring harness for damage to the sheathing, including the underside, in the area where it enters the electronics box,
back (1) down to where the harness is secured to the inner fender housing (2).
2. Visually inspect the seal for the electronics box lid for damage.
3. Visually inspect the correct seating of the harness grommets in the electronics box.
4. Check the harness plug contacts for evidence of oxidation or the presence of moisture.
5. Check the operation of the electronics fan (if fitted).
Repair measures:
1. Rewrap the wiring harness sheathing using adhesive tape, up and over the grommet and back, in both directions so it overlaps. Then repeat the
process, using fabric tape, securing the end of the fabric nearest the inner fender housing (2) with a wire tie.
2. Wipe dry the electronics box; removal or replacement is not necessary.
3. If the seal in the lid is damaged, replace it; otherwise, it can be reused.
4. If there is evidence of moisture or oxidation on the plug-in contacts, they must be cleaned or replaced.
5. If necessary, create a TC case for DME/DDE replacement authorization.
6. Seat the harness grommets back into the electronics box; carefully fit the electronics box lid; secure the three clips; and close the slide lock.
BMW X5 M (E70) V8-4.4L Turbo (S63) Page 253
WARRANTY INFORMATION
Electrical - Various Electrical/Driveability/DTC Issues
SI B12 17 09
Engine Electrical Systems
May 2011
Technical Service
This Service Information bulletin supersedes SI 12 17 09 dated March 2010.
[NEW] designates changes to this revision
SUBJECT
BMW X5 M (E70) V8-4.4L Turbo (S63) Page 252
Water Is Leaking into the Electronics Box
MODEL
[NEW] E70, E71, and E72 produced from 10/1/06 to 12/14/10
SITUATION
Any of the following situations could occur if water has entered the electronics box:
^ The engine is hard to start or will not start.
^ The engine goes into emergency mode operation.
^ The battery is discharged.
^ Various Check Control messages are displayed.
^ [NEW] Various control units listed below may fail to enter sleep mode.
^ [NEW] DME, DDE, DSC, EGS, EKP, GWS, AFS, ARS, AMP, PGS
^ Various DME faults are stored or the DME is not recognized in an ISTA diagnostic session.
CAUSE
Water inside the electronics box could result in damage to the DME/DDE module and wiring plug-in contacts.
CORRECTION
Check for water ingress into the electronics box.
If water is present, the following steps must be carried out to determine the necessary repairs.
Begin by removing the right front cowl components and the electronics box lid, and refer to the illustration below.
1. Visually inspect the vehicle wiring harness for damage to the sheathing, including the underside, in the area where it enters the electronics box,
back (1) down to where the harness is secured to the inner fender housing (2).
2. Visually inspect the seal for the electronics box lid for damage.
3. Visually inspect the correct seating of the harness grommets in the electronics box.
4. Check the harness plug contacts for evidence of oxidation or the presence of moisture.
5. Check the operation of the electronics fan (if fitted).
Repair measures:
1. Rewrap the wiring harness sheathing using adhesive tape, up and over the grommet and back, in both directions so it overlaps. Then repeat the
process, using fabric tape, securing the end of the fabric nearest the inner fender housing (2) with a wire tie.
2. Wipe dry the electronics box; removal or replacement is not necessary.
3. If the seal in the lid is damaged, replace it; otherwise, it can be reused.
4. If there is evidence of moisture or oxidation on the plug-in contacts, they must be cleaned or replaced.
5. If necessary, create a TC case for DME/DDE replacement authorization.
6. Seat the harness grommets back into the electronics box; carefully fit the electronics box lid; secure the three clips; and close the slide lock.
BMW X5 M (E70) V8-4.4L Turbo (S63) Page 253
WARRANTY INFORMATION
