U0133 – BMW DTC

BMW DTC U0133 – Lost Communication With Active Roll Control Module

DTC U0133 meaning on BMW

The DTC U0133 code on a BMW indicates a communication error between the vehicle’s control module and the Active Roll Control Module. This error signifies that the control module is unable to establish communication with the Active Roll Control Module, which can affect the proper functioning of the vehicle’s stability and handling systems.

BMW DTC U0133 symptoms

Symptoms of the DTC U0133 code on a BMW may include:

• Warning lights on the dashboard, such as the stability control or traction control lights
• Loss of stability control functionality
• Impaired handling or steering response

BMW DTC U0133 causes

The DTC U0133 code on a BMW can be caused by various factors, including:

• Faulty wiring or connections between the control module and Active Roll Control Module
• A malfunctioning Active Roll Control Module
• Software issues within the control module

BMW DTC U0133 seriousness

The DTC U0133 code should be addressed promptly as it can impact the vehicle’s stability and handling systems. Driving with this code present may compromise the safety and performance of the BMW, especially in situations where stability control is crucial.

How to diagnose DTC U0133 on BMW

To diagnose the DTC U0133 code on a BMW, a mechanic may perform the following steps:

1. Use a diagnostic scanner to retrieve the specific fault codes stored in the vehicle’s system
2. Inspect the wiring and connections between the control module and Active Roll Control Module for any damage or loose connections
3. Test the Active Roll Control Module for proper functionality
4. Check for any software updates or reprogramming needed for the control module

How to fix DTC U0133 on BMW

Fixing the DTC U0133 code on a BMW may involve the following steps:

1. Repair or replace any damaged wiring or connections between the control module and Active Roll Control Module
2. Replace the malfunctioning Active Roll Control Module if necessary
3. Update or reprogram the software in the control module to address any software-related issues

How to erase DTC U0133 on BMW

To erase the DTC U0133 code on a BMW, a mechanic can use a diagnostic scanner to clear the fault codes stored in the vehicle’s system. Once the underlying issue has been addressed and fixed, clearing the code will reset the system and turn off the warning lights on the dashboard.

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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