B1536: Memory 2 Switch Circuit Open
The B1536 code indicates an open circuit in the memory 2 switch circuit. This code is specific to vehicles equipped with memory seat systems, where the driver seat module (DSM) or memory seat module (MSM) detects a break in the electrical continuity of the memory 2 switch circuit. The memory switch allows the driver to recall a pre-programmed position for the seat, mirrors, and sometimes pedals. An open circuit means there is a disruption in the electrical path between the switch, the control module, and power or ground, preventing the switch signal from reaching the module.
1. Commonly Affected Makes
2. Most Common Causes
- Faulty or worn memory 2 switch
- Open or corroded wiring between the switch and seat control module
- Loose, disconnected, or corroded connector pins at the memory switch
- Blown fuse in the power supply circuit for the memory seat module
- Poor ground connection in the memory switch circuit
3. Symptoms You Will Notice
- Memory 2 switch does not recall seat position
- Other memory switches may still work
- No response when pressing memory 2 button
4. Step-by-Step Diagnosis
Check for blown fuses related to the memory seat module
Inspect the memory 2 switch connector for loose, bent, or corroded pins
Test continuity of the wiring between the switch and the seat control module
Verify proper ground at the switch circuit
If wiring and switch are good, test the seat control module for internal faults
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, it is safe to drive. The code only affects the memory seat recall function for the memory 2 position; the seat can still be adjusted manually.
How much does it cost to fix?▼
Repair costs typically range from $50 to $200 for switch replacement or wiring repair, up to $500 or more if the seat control module needs replacement.