Disconnect the connector and detach the 4 clamps.

Operate the power seat switch knob and move the seat to the rearmost position.

Lexus IS250 IS220d GSE20 ALE20 SEAT

Place the front seat assembly in the vehicle and align the adjuster pin with the hole on the vehicle side.

Engage the clip and install the vertical adjuster spacer.

Remove the snap ring and the vertical seat adjuster knob.

Move the front seat assembly to the rearmost position by operating the slide handle.

Lexus IS250 IS220d GSE20 ALE20 SEAT

The A/C amplifier assembly receives seat position signals when the engine switch is on (IG), and then transmits airflow amount signals to each seat climate blower.

Turn the engine switch on (IG).