Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit/System Verification
- Ignition ON.
- Verify that DTC B285A 4B is not set.
- DTC B285A 4B is set
- Perform the Steering Column Tilt Wheel and Telescope Control Module Learn. Refer to Steering Column Tilt Wheel and Telescope Control Module Learn
- Verify that DTC B285A 4B does not reset.
- DTC B285A 4B is set, replace the K99 Steering Column Position Control Module.NOTE: DO NOT replace the K40D Seat Memory Control Module - Driver.
- DTC B285A 4B is not set
- DTC B285A 4B is set, replace the K99 Steering Column Position Control Module.
- All OK
- Go to next step: DTC B285A 4B is not set.
- Verify the scan tool Steering Column Direction Switch parameter changes between Inactive, Forward, Rearward, Up and Down when exercising the S71 Steering Column Tilt and Telescope Switch.
- If the parameter does not change
Refer to Circuit/System Testing - Switch Malfunction.
- Go to next step: If the parameter changes
- If the parameter does not change
- Verify the operation of the M68 Steering Column Tilt Motor while commanding the Steering Column Tilt Up and Steering Column Tilt Down Command with a scan tool.
- If the Steering Column Tilt Up or Steering Column Tilt Down Command does not work
Refer to Circuit/System Testing - Tilt Motor Malfunction
- Go to next step: If the Steering Column Tilt Up and Steering Column Tilt Down Command works
- If the Steering Column Tilt Up or Steering Column Tilt Down Command does not work
- Verify the M65 Steering Column Telescope Motor while commanding the Steering Column Telescope Forward and Steering Column Telescope Rearward with a scan tool.
- If the Steering Column Telescope Forward and Steering Column Telescope Rearward does not work
Refer to Circuit/System Testing - Telescope Motor Malfunction
- Go to next step: If the Steering Column Telescope Forward and Steering Column Telescope Rearward works
- If the Steering Column Telescope Forward and Steering Column Telescope Rearward does not work
- Verify that DTC B285A 39 is not set.
- DTC B285A 39 is set NOTE: DO NOT replace the K40D Seat Memory Control Module - Driver.
Replace the K99 Steering Column Position Control Module.
- Go to next step: DTC B285A 39 is not set.
- DTC B285A 39 is set
- All OK.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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