P2537 – BMW DTC

BMW DTC P2537 – Ignition Switch Accessory Position Circuit Low

DTC P2537 meaning on BMW

DTC P2537 on a BMW indicates a fault in the ignition switch accessory position circuit. This fault is detected when the voltage signal from the ignition switch accessory position circuit falls below the specified threshold, signaling a low voltage condition.

BMW DTC P2537 symptoms

Symptoms of DTC P2537 on a BMW may include:

• Failure of accessories to operate in the accessory position
• Intermittent starting issues
• Check Engine Light (CEL) illuminated on the dashboard

BMW DTC P2537 causes

Common causes of DTC P2537 on a BMW include:

• Worn or damaged ignition switch
• Faulty wiring or connectors in the ignition switch accessory position circuit
• Corrosion in the circuit connections

BMW DTC P2537 seriousness

While DTC P2537 may not directly affect the drivability of the vehicle, it can lead to inconvenience and potential starting issues. Ignoring this fault can result in further electrical problems and may leave the vehicle stranded if the ignition switch fails completely.

How to diagnose DTC P2537 on BMW

To diagnose DTC P2537 on a BMW, a mechanic should perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and related data
2. Inspect the ignition switch and its wiring for any visible damage or corrosion
3. Test the voltage output of the ignition switch in the accessory position
4. Check for continuity and proper connections in the circuit

How to fix DTC P2537 on BMW

To fix DTC P2537 on a BMW, the following steps can be taken:

1. Replace the faulty ignition switch if it is found to be the cause
2. Repair or replace any damaged wiring or connectors in the circuit
3. Clean any corrosion from the connections and ensure proper contact
4. Clear the fault code and test the system for proper operation

How to erase DTC P2537 on BMW

To erase DTC P2537 on a BMW, follow these steps:

1. Use a diagnostic scanner to clear the fault code from the vehicle’s memory
2. Ensure that the underlying issue causing the fault code has been resolved
3. Perform a test drive to confirm that the fault code does not return

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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