B1537: Memory 2 Switch Circuit Short to Battery
Diagnostic trouble code B1537 indicates a short to battery voltage (B+) in the Memory 2 switch circuit, which is part of the power seat memory positioning system. This code is specific to Ford Motor Company vehicles and their associated brands. The driver or passenger seat control module detects an abnormally high voltage on the Memory 2 switch line when it should not be present, suggesting a short to battery positive in the wiring or the switch itself.
1. Commonly Affected Makes
2. Most Common Causes
- Faulty Memory 2 seat switch with abnormal internal resistance
- Wiring in the Memory 2 switch circuit shorted to B+ (battery positive)
- Corroded or bent pins in the seat control module connector causing a short
- Internal failure in the seat control module (DSM) affecting the detection circuit
- Exposed splice or junction in the wiring harness contacting battery positive
3. Symptoms You Will Notice
- Seat memory position 2 not working or storing positions
- Seat may move unexpectedly or not respond to memory recall
4. Step-by-Step Diagnosis
Scan for additional codes and verify B1537 is present
Visually inspect the Memory 2 switch and wiring for damage or corrosion
Check for battery voltage on the Memory 2 switch circuit with the switch released (should be low)
Test the Memory 2 switch resistance and continuity per service manual
Inspect the seat control module connector for bent or corroded pins
If wiring and switch are okay, suspect a faulty seat control module
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, it is generally safe to drive, but the memory seat function for position 2 will be inoperative. The issue does not affect vehicle safety systems.
How much does it cost to fix?▼
Repair costs typically range from $100 to $400, depending on whether the switch, wiring repair, or seat control module replacement is needed.