U1105 – BMW DTC

BMW DTC U1105 – Message Monitoring Torque Request ACC Alive Check

DTC U1105 meaning on BMW

The Diagnostic Trouble Code (DTC) U1105 on BMW vehicles refers to the ¨Message Monitoring Torque Request ACC Alive Check¨ system. This code indicates an issue with the monitoring of the torque request signal within the Active Cruise Control (ACC) system.

BMW DTC U1105 symptoms

Symptoms of the BMW DTC U1105 may include:

• Malfunction indicator light (MIL) or check engine light illuminated on the dashboard
• Problems with the ACC system, such as cruise control not functioning properly
• Possible loss of torque request signal communication

BMW DTC U1105 causes

Common causes of the BMW DTC U1105 may include:

• Faulty torque request sensor
• Wiring or connection issues in the ACC system
• Software glitches or communication errors

BMW DTC U1105 seriousness

The seriousness of the BMW DTC U1105 code can vary. While it may not directly affect the drivability of the vehicle, issues with the ACC system can impact comfort and convenience features. It is recommended to address this code to ensure proper functioning of the cruise control system.

How to diagnose DTC U1105 on BMW

To diagnose the DTC U1105 on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer
2. Inspect the torque request sensor and its wiring for any visible damage or loose connections
3. Perform a system test on the ACC system to check for proper functionality
4. Check for any related software updates or recalibrations

How to fix DTC U1105 on BMW

To fix the DTC U1105 on a BMW, consider the following:

• Replace the faulty torque request sensor if necessary
• Repair any damaged wiring or connections in the ACC system
• Clear the fault codes using a diagnostic scanner after addressing the root cause
• Perform a test drive to ensure the issue has been resolved

How to erase DTC U1105 on BMW

To erase the DTC U1105 on a BMW:

1. Connect a diagnostic scanner to the vehicle’s OBD-II port
2. Access the scanner’s menu to clear the fault codes stored in the system
3. Follow the on-screen prompts to erase the DTC U1105 code
4. Disconnect the scanner and start the vehicle to confirm the code has been cleared

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

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