2024 BMW X3 / X4 Steering Wheel Heater Inoperative TSB
BMW has issued Technical Service Bulletin 32 03 25, dated March 10, 2025, for 2024 X3 and X4 models addressing an inoperative steering wheel heater. The issue is linked to a poor electrical connection at the Steering Wheel Module connector X434*1B pin 11, leading to fault code “30490 Missing LIN…
Gilt auch für
- BMW X4
- 2024
Symptoms
Owners of 2024 BMW X3 (G01) and X4 (G02) Sports Activity Vehicles may experience an inoperative steering wheel heating system. This means the steering wheel will not warm up when activated, significantly impacting driver comfort, especially in colder climates. This issue, which affects the functionality of the BMW X3 steering wheel heater, is often accompanied by a specific fault code stored in the vehicle's diagnostic system.
Fault Codes / DTCs
When the steering wheel heater is inoperative, the vehicle's Body Domain Controller will likely store the fault code “30490 Missing LIN slave”. This code indicates a communication problem within the LIN (Local Interconnect Network) bus system. Specifically, it means that a component expected to be present and communicating on the LIN bus is not responding correctly, leading to the failure of the steering wheel heating function.
Diagnosis / Trigger Conditions
The root cause for the inoperative steering wheel heater and the “30490 Missing LIN slave” fault code has been identified as a poor electrical connection. This poor contact occurs within the KL31 circuit, which is located at pin 11 of the Steering Wheel Module connector, specifically connector X434*1B. Technicians will typically confirm the presence of the fault code and then perform a visual inspection of this particular connector and pin for any signs of poor contact, corrosion, or damage, as illustrated by the example photo in the bulletin.
Repair Procedure Summary
To resolve the inoperative BMW X3 steering wheel heater and the associated fault code, technicians must perform a targeted wiring repair. The procedure involves accessing the Steering Wheel Module connector X434*1B and carefully inspecting pin 11 for any signs of poor contact. This could include loose connections, corrosion, or physical damage to the terminal.
If poor contact is identified, the technician will repair the wiring as needed. This may involve cleaning the terminal, re-pinning the wire into the connector, or replacing the affected terminal entirely. In cases where the connector itself shows signs of damage or degradation due to the poor contact, the entire connector X434*1B may need to be replaced. The goal is to ensure a robust and reliable electrical connection for the KL31 circuit, thereby restoring proper communication and functionality to the steering wheel heating system.
Owner Action
If you own a 2024 BMW X3 (G01) or X4 (G02) and are experiencing an inoperative steering wheel heater, or if you have had the fault code “30490 Missing LIN slave” diagnosed, it is recommended to schedule an appointment with an authorized BMW dealership. When discussing the issue with your service advisor, reference Technical Service Bulletin 32 03 25, dated March 10, 2025. The dealership will be able to accurately diagnose the specific cause of the problem and perform the necessary wiring repair to restore the functionality of your BMW X3 steering wheel heater.
Source: NHTSA ID: 11015552
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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 2024 model year
42 complaints, the 19th most of 23 model years on file. Owners reported 5 crashes, 0 fires and 3 injuries for this year, which also has 3 recalls on file.
Electrical System, the system this article covers, accounts for 450 of 2,295 complaints (20%), including 13 for 2024.
Complaints by model year
| 2004 | 138 | |
|---|---|---|
| 2006 | 143 | |
| 2007 | 258 | |
| 2008 | 122 | |
| 2011 | 126 | |
| 2013 | 226 | |
| 2019 | 171 | |
| 2020 | 110 | |
| 2021 | 113 | |
| 2024 | 42 |
Most-reported systems
- Engine — 494
- Electrical System — 450
- Air Bags — 404
- Power Train — 247
- Seats — 218
Latest recalls for the 2024 model year
- 26V524000 — Steering (Aug 2026)
- 25V106000 — Latches/Locks/Linkages (Feb 2025)
- 23V770000 — Steering (Nov 2023)
Recent owner reports about electrical system
The vehicle is under an open fire‑risk recall involving the starter system. The manufacturer has not provided a remedy. The dealership confirmed that parts for the few vehicles BMW claims are repairable are backordered until 2027.
Read owner complaints →The contact owns a 2024 BMW X3. The contact received notification of NHTSA Campaign Number: 26V438000 (Electrical System); however, the part to do the recall repair was not yet available. The local dealer was contacted.
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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