B58C/D 48V Water Pump Diagnosis (SI B11 06 23)
Publication date: 2023-07-19Reference number: SI B11 06 23
B58C/D 48V WATER PUMP DIAGNOSIS
TECHNICAL SERVICE BULLETIN
| BMW: | G01 (X3 Sports Activity Vehicle); G02 (X4 Sports Activity Coupe); G05 (X5 Sports Activity Vehicle); G06 (X6 Sports Activity Coupe); G07 (X7 Sports Activity Vehicle); G12 (7 Series Sedan); G14 (8 Series Convertible); G15 (8 Series Coupe); G16 (8 Series Gran Coupe); G20 (3 Series Sedan); G22 (4 Series Coupe); G23 (4 Series Convertible); G26 (4 Series Gran Coupe); G29 (Z4 Roadster); G30 (5 Series Sedan); G32 (640i xDrive Gran Turismo); G42 (2 Series Coupe) |
SITUATION
During a visual inspection, the mechanical water pump appears to be leaking.
Some of the water pumps returned to the WPRC, after analysis, have shown to be not leaking/defective.
CAUSE
- Deposits or contamination is visible on the water pump, but there is no active leak.
Or the:
- Coolant pump is actively leaking.
CORRECTION
Follow the Procedure to determine if the mechanical water pump is defective.
PROCEDURE
If the weep hole on the pump is unobstructed, or shows a small amount of sweating (1); the pump is not defective.
There is no defect with the water pump if the cap (2) isn't seated properly. The cap can be pressed back into place to reseat it.
The pump is defective if there is an active leak coming from the weep hole (1), or there is a considerable amount of dried coolant covering the weep hole (2):
PARTS INFORMATION
When a replacement is necessary, obtain and confirm the part number(s) for your specific vehicle by entering the chassis number in either ETK or AIR which considers specific equipment and/or options.
| Part Number | Description | Quantity |
|---|---|---|
| Refer to ETK | Water pump 48V | 1 |
CLAIM INFORMATION
This Service Information Bulletin provides technical, diagnosis, and repair-related information.
Damage and/or issues caused by outside influences are not covered under the BMW limited warranties.
ELIGIBLE AND COVERED WORK/REPAIRS
When used to repair a verified defect in materials or workmanship, the information provided in this bulletin is covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks.
To submit a claim, please follow the established and applicable warranty policy and procedures (Labor/Part/Sublet) that apply to the repair being performed.
Repair Code 1151074800: (Main) mechanical coolant pump (incl. holder) Leaking
Together with the flat rate labor operation codes and flat rate unit (FRU) allowances in AIR (including the diagnosis that applies*).
Check the cooling system for water tightness with the special tool
- 17 00 009 (Main)
- 17 00 509 (Pluspostion)
Removing and installing/replacing the coolant pump
- 11 51 000 (Main)
- 11 51 508 (Plusposition)
- 11 51 504 (Coolant drained)
Only one Main labor operation code can be claimed per repair visit.
*Based on which one applies to your center, please refer to SI B01 01 20 or SI B01 07 20 for the applicable procedure for documenting, claiming, and explaining, on the RO and in the claim comments, your diagnosis work time (WT), job/repair work time (WT), and the vehicle repairs your center performed, unless otherwise required by State law.
FEEDBACK REGARDING THIS BULLETIN
| Technical Feedback | To submit feedback for the technical topic of this bulletin: Submit your feedback in the rating box at the top of this bulletin |
| Warranty Feedback | To submit feedback for the CLAIMS section of this bulletin: Submit an IDS ticket to the Warranty Department, or use the chat available in the Warranty Documentation Portal |
| Parts Feedback | To submit feedback for the PARTS section of this bulletin: Submit an IDS ticket to the Parts Department |