The handling method of Highlander retreating 2 cm after colliding with the front wheel is as follows: check the overall condition of the vehicle, adjust the position of the front wheel and check other parts.

1. Check the overall condition of the vehicle: First, check the overall condition of the vehicle, including the front wheel, wheel suspension system and body structure. If there is obvious damage or deformation, you should contact a professional garage for maintenance in time.

2. Adjust the position of the front wheel: If the front wheel only moves back a little by 2 cm, just adjust the tire positioning.

3. Check other parts: Before front wheel alignment, check other related parts, such as steering system and suspension system.