What Does B1537 Mean?
B1537 indicates the Body Control Module (BCM) has detected an abnormal electrical condition in the Driver Information Center (DIC) switch circuit. This code is triggered when the BCM monitors voltage or resistance values in the switch assembly that fall outside expected parameters, indicating an open circuit, short to ground, short to power, or excessive resistance. The DIC switches allow the driver to navigate menus and settings on the instrument cluster display.
Common Causes
45%
Faulty DIC switch assembly with worn contacts, broken internal connections, or water intrusion causing corrosion
30%
Damaged, corroded, or loose wiring harness connections between DIC switch and BCM, often at connector terminals
15%
Broken or chafed wiring in the steering column area due to movement and wear over time
10%
Failed Body Control Module with internal circuit fault preventing proper switch monitoring
Diagnostic Steps
1
Step 1: Perform a visual inspection of the DIC switch assembly on the steering wheel or dashboard for physical damage, signs of liquid intrusion, or loose mounting. Check for sticky or non-responsive buttons during operation.
2
Step 2: Using a digital multimeter, backprobe the DIC switch connector and measure resistance values across each switch position while cycling through buttons. Compare readings to manufacturer specifications (typically 0-5 ohms closed, infinite ohms open).
3
Step 3: Inspect all wiring harness connectors between the DIC switch and BCM for corrosion, bent pins, or loose connections. Check for proper terminal seating and measure continuity through each wire with the connector disconnected.
4
Step 4: With ignition on and connectors attached, use a multimeter to verify proper reference voltage (typically 5V or 12V) is being supplied from the BCM to the DIC switch circuit. Check for voltage drops indicating high resistance.
5
Step 5: If all wiring and voltage supply tests pass, perform a functional test by replacing the DIC switch assembly with a known-good unit and verify code clears and proper operation is restored.
6
Step 6: If problem persists after switch replacement and all circuits test normal, suspect BCM internal fault and perform BCM diagnostic tests or consider module replacement with proper programming.
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
B1537 indicates the Body Control Module (BCM) has detected an abnormal electrical condition in the Driver Information Center (DIC) switch circuit. This code is triggered when the BCM monitors voltage or resistance values in the switch assembly that fall outside expected parameters, indicating an ope...
The most common cause of B1537 (Driver Information Center (DIC) Switch Circuit) is: Faulty DIC switch assembly with worn contacts, broken internal connections, or water intrusion causing corrosion
Typical repair costs for B1537 range from $150 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive as this code only affects the ability to navigate information displays and adjust certain settings through the DIC. Repair is not urgent but should be addressed to restore full functionality of the driver information system.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1537 to identify the root cause.
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Quick Info
Category
Body
System
Body Control and Driver Information
Difficulty
Type
Manufacturer
Recommended Tools
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