2025 BMW G9X Washer Fluid Leak TSB 61 01 25

BMW has released Technical Service Bulletin (TSB) 61 01 25, addressing a concern where washer fluid may be forced out of the windshield washer nozzles during highly dynamic driving conditions. This issue, labeled as "G9X WASHER FLUID LEAK DURING DYNAMIC DRIVING," can lead to the washer fluid reservoir becoming completely empty, impacting visibility and safety. This TSB applies to 2025 BMW G90 M5 Sedan and G99 M5 Touring models.

Symptoms

Owners of affected 2025 BMW 530i and other G9X models may notice that their windshield washer fluid reservoir empties prematurely, especially after periods of spirited or dynamic driving. The primary symptom is the visible loss of washer fluid from the windshield washer nozzles, indicating a leak in the system.

Cause

The root cause of this 2025 BMW 530i washer fluid leak is an insufficient fluid retention capability within the washer fluid supply hose system. This allows fluid to escape under specific driving conditions.

Correction

To correct the "G9X WASHER FLUID LEAK DURING DYNAMIC DRIVING" issue, the driver and passenger side washer fluid diaphragms must be replaced. The new components include non-return (one-way) valves, which are designed to improve fluid retention and prevent leakage.

Repair Procedure Summary

When a customer reports the washer fluid leak, technicians should follow a specific procedure to install the new non-return valves. This repair is designated as "MOBILE FRIENDLY," meaning it can be performed outside of a traditional service bay.

1. Disconnection: The first step involves disconnecting the washer fluid hoses at their separation points on both the driver's and passenger's sides of the vehicle. This requires careful handling to avoid damage to the existing components.
2. Unlocking Coupling: To unfasten the hose coupling, technicians must slide a lock down in the direction of red arrows and gently squeeze a grey lock while tugging on the other end of the separation point.
3. Hose Removal: The rubber washer hose is then removed from the barb located on the end of the separation point.
4. Valve Installation: A new non-return valve is installed onto the end of the existing coupling. Technicians must listen for an audible click to ensure the valve is securely seated.
5. Hose Reinstallation: The washer hose, previously removed, is then installed onto the barb of the new diaphragm.
6. Securing Hoses: Finally, the washer hoses are secured into the guides of the windshield panel clips to ensure proper routing and prevent future issues.
7. System Test: After completing the installation, the windshield washer system must be tested to confirm proper operation and inspect for any leaks.

Required Parts

To perform this repair, technicians will need to order specific parts. The primary component is a non-return valve kit.

Part Number	Description	Quantity
61 61 9478357	Spray nozzle with hose, driver's side ("LL" stands for German phrase Links Lenker, meaning left-hand drive)	2

Note: While part number 61 61 9478357 is designated for G2x Series vehicles, for this specific repair on G9x vehicles (including the 2025 BMW 530i), only the non-return valve portion of the kit is required. The included washer nozzle portion is not needed.

Warranty Information

This repair, identified by repair code 6166024800 for "Windscreen washer system, lines/valves/connectors Leaking," is covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. Labor operations for this repair include 61 00 009 for confirming the washer issue and 61 99 000 for the replacement of the diaphragms with non-return valves. Technicians are advised to refer to Service Information (SI) B01 01 20 or B01 07 20 for detailed procedures on documenting and claiming warranty work.

What Owners Should Know

If you own a 2025 BMW G90 M5 Sedan or G99 M5 Touring and experience a 2025 BMW 530i washer fluid leak, especially during dynamic driving, your vehicle may be affected by this TSB. This repair is covered under your BMW New Vehicle Limited Warranty. Contact your authorized BMW dealer to have the issue diagnosed and repaired. The repair involves replacing specific diaphragms with non-return valves to prevent the washer fluid from being forced out.

NHTSA ID: 11014512