2021 BMW X3 Sunroof Water Leak Diagnosis TSB
BMW has issued Technical Service Bulletin (TSB) 10190857 to address sunroof water leaks in 2021 X3, X4, X5, and X7 models. This bulletin provides diagnostic guidance for technicians to identify common areas of water entry, helping to resolve the issue of a 2021 BMW X3 sunroof water leak.
Also applies to
- BMW X4
- 2021
- BMW X5
- 2021
- BMW X7
- 2021
Symptoms
Owners of affected 2021 BMW X3, X4, X5, and X7 vehicles may notice water entering the cabin through or around the sunroof assembly. This can manifest as dampness, visible water drips, or water stains on the interior headliner or upholstery.
Diagnosis / Trigger Conditions
This Technical Service Bulletin (TSB) 10190857 specifically addresses the diagnosis of sunroof water leaks. It outlines multiple known areas where water can potentially enter the vehicle through the sunroof system. Technicians will use this guidance to systematically inspect and identify the source of the 2021 BMW X3 sunroof water leak.
Repair Procedure Summary
The TSB does not detail a specific repair step-by-step but rather focuses on providing diagnostic information. It serves as a guide for service technicians to pinpoint the exact location of water intrusion. By identifying these known areas of possible water entry, technicians can then proceed with the appropriate repair to seal the leak effectively.
Owner Action
If you own a 2021 BMW X3, X4, X5, or X7 and are experiencing a sunroof water leak, it is recommended to schedule an appointment with an authorized BMW service center. Inform them about the symptoms you are observing. Technicians can refer to TSB 10190857 to assist in accurately diagnosing and resolving the water entry issue.
Source: NHTSA ID: 10190857
What BMW X3 owners report
Counted from the records in our database across 23 model years.
- 2,295
- Owner complaints
- 64
- Recalls
- 1,126
- Service bulletins
- 114
- Crashes reported
- 133
- Fires reported
- 118
- Injuries reported
The 2021 model year
113 complaints, the 8th most of 23 model years on file. Owners reported 5 crashes, 2 fires and 2 injuries for this year, which also has 10 recalls on file.
Visibility, the system this article covers, accounts for 20 of 2,295 complaints (1%), including 1 for 2021.
Complaints by model year
| 2004 | 138 | |
|---|---|---|
| 2006 | 143 | |
| 2007 | 258 | |
| 2008 | 122 | |
| 2011 | 126 | |
| 2013 | 226 | |
| 2015 | 105 | |
| 2019 | 171 | |
| 2020 | 110 | |
| 2021 | 113 |
Most-reported systems
- Engine — 494
- Electrical System — 450
- Air Bags — 404
- Power Train — 247
- Seats — 218
Latest recalls for the 2021 model year
- 26V056000 — Electrical System (Jan 2026)
- 25V636000 — Electrical System (Sep 2025) — Park outside
- 24V764000 — Structure (Oct 2024)
Recent owner reports about visibility
In June 2023, I purchased a vehicle from Enterprise Car Sales. Around June 2024, I reached out to them with concerns about the vehicle. They recommended I contact either the insurance or warranty company, but neither could address my issue.
Read owner complaints →Driving at highway speeds, the front sun roof exploded into the vehicle. 2nd time this has happened. Previous time was 03/2022.
Complaints are owner reports filed with NHTSA. They are unverified, and counts depend on how many vehicles were sold, so they are not a failure rate.
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