B0851

Memory Seat Module Battery Out Of Range

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Resetting saved seat positions
Inability to remember new seat position settings
Unstable operation of electric seat drives
SRS malfunction indicator is on (on some models)

Causes

Low or faulty battery
Problems with the generator (unstable voltage)
Oxidation or damage to battery terminals
Damaged wiring harness to the memory module
Poor contact in module connectors
Module power relay malfunction
Failure of the seat memory module itself

How to Fix

Check the voltage on the battery with the engine off and running.
Test the functionality of the generator
Inspect and clean battery terminals
Check the integrity of the wiring harness to the seat memory module
Test the module power circuit for breaks/short circuits
Check the contacts in the module connectors
If necessary, replace the seat memory module

Related codes

B0850 B0852 B2477