U0104 on BMW M5
Factory diagnostic protocol and troubleshooting wire for fault code U0104 specifically for the BMW M5 (2020–2026, 4.4L Twin-Turbo V8 M HYBRID (717HP / 738 lb-ft torque)).
1. Symptoms of U0104 on BMW M5
When the Engine Control Module (ECM/PCM) on your BMW M5 (4.4L Twin-Turbo V8 M HYBRID (717HP / 738 lb-ft torque)) logs fault code U0104, drivers commonly observe:
2. Most Likely Causes on BMW M5
Historical warranty claims and technical repair bulletins for BMW M5 point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for BMW M5
Clean snow, ice, mud, or dead bugs off front radar emblem. on the BMW M5 equipped with 4.4L Twin-Turbo V8 M HYBRID (717HP / 738 lb-ft torque).
Verify power feed to radar sensor. on the BMW M5 equipped with 4.4L Twin-Turbo V8 M HYBRID (717HP / 738 lb-ft torque).
Execute optical/radar alignment procedure if bumper was removed. on the BMW M5 equipped with 4.4L Twin-Turbo V8 M HYBRID (717HP / 738 lb-ft torque).
Clear DTCs and test cruise on highway. on the BMW M5 equipped with 4.4L Twin-Turbo V8 M HYBRID (717HP / 738 lb-ft torque).
Equipment for Diagnosing BMW M5 (U0104)
BMW M5 OEM Replacement Sensor
Direct-fit replacement assembly engineered to OEM tolerances for BMW M5.
AstroAI Auto-Ranging Digital Multimeter
Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.
BlueDriver Bluetooth Pro OBDII Scan Tool
Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.
Other Common Fault Codes on BMW M5
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the BMW M5:
4. BMW M5 U0104 FAQs
What causes code U0104 to trigger on a BMW M5?
On the BMW M5 (4.4L Twin-Turbo V8 M HYBRID (717HP / 738 lb-ft torque)), U0104 is most frequently caused by Blocked or dirty front radar sensor in grille/bumper or Blown radar module fuse.
Where is the OBD-II port located on my BMW M5?
On the BMW M5, the 16-pin DLC diagnostic connector is located Driver lower footwell assembly. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my BMW M5 with code U0104?
Yes. Normal driving is unaffected, but Adaptive Cruise Control will not engage. Given that U0104 carries a Low severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.