Water Is Leaking Into The Electronics Box (12 17 09)

WATER IS LEAKING INTO THE ELECTRONICS BOX

TECHNICAL SERVICE BULLETIN

SUBJECT

Water Is Leaking into the Electronics Box 

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.
• Various control units listed below may fail to enter sleep mode.
  • 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.

WARRANTY INFORMATION

Covered under the terms of the BMW New Vehicle/SAV Limited Warranty.

Defect Code:  12 90 01 48 00

Labor Operation:	Labor Allowance:	Description:
00 00 006	Refer to KSD2	Performing vehicle test
12 99 000	Work Time*	Repair as needed, per the measures as listed

Labor operation code 00 00 006 is a main labor operation, if you are using a main labor code for another repair; use the plus code labor operation 00 00 556 instead.

Only one main labor operation can be claimed per repair visit. All other labor operations on the same line or other lines must be claimed using plus code labor operations.

*Work Time (WT) - the amount of FRUs claimed for this labor operation must be documented by an individual punch time that supports the time necessary to perform the required repair.

If a DME/DDE replacement is necessary, please refer to following labor operations in KSD2 for the applicable FRU allowances.

Labor Operation:	Description:
12 14 550	Replace DME (Gasoline engines)
12 14 950	Additional job, if applicable and the DME cannot be read out, read out code at each fuel injector and enter in vehicle diagnosis system
or
13 61 501	Replace DDE (Diesel engine)
13 61 950	Additional job, if the DDE cannot be read out, read out code at each fuel injector and enter in vehicle diagnosis system
61 00 710	Programming/encoding control unit(s), without CAS
or
61 00 720	Programming/encoding control unit(s), with CAS
Refer to KSD2	Concluding work (initializations) as described in the ISTA/P final report