B1735

Symptoms

• Front seat up button does not work
• The lift function is jerky or unstable
• Complete failure of the front seat adjustment system
• The malfunction indicator on the dashboard lights up
• The fault is only displayed when attempting to use the lift function

Causes

• Broken or damaged wire in the seat lift circuit wiring harness
• Oxidation or corrosion of switch or sensor connector contacts
• Malfunction of the seat adjustment button (switch)
• Failure of the electric motor of the front edge of the seat lift mechanism
• Short circuit in control or power circuit
• Seat adjustment control relay malfunction
• Failure or failure of the seat control module
• Poor contact in control or power connector

How to Fix

1. Connect OBD-II scanner and confirm code B1735, check for additional related codes
2. Visually inspect the seat lift circuit wiring harness for damage, fractures, or breaks.
3. Check the control switch connectors and connectors on the electric motor for corrosion and oxidation, clean if necessary.
4. Check the continuity of the circuit between the switch, relay and electric motor using a multimeter in resistance measurement mode
5. Check the supply voltage at the electric motor connector when pressing the lift button
6. Replace the control button (switch) if it does not close the circuit when pressed
7. Replace the electric motor of the lifting mechanism if the circuit is intact, but the motor does not respond to the signal
8. Replace the seat control module if all components are checked but the error persists
9. Clear the fault code and test drive to confirm the problem has been fixed

Related codes

FAQ