AV-SCANNER / Service function guides / Body and comfort
This guide covers the complete process of restoring cloudy headlight lenses and correctly aiming the beams, written for both motorists who want to tackle the job at home and working mechanics who need a reliable shop procedure. You will learn how the lens, reflector and bulb system works together, how to diagnose whether restoration is viable or replacement is required, and how to prepare the vehicle and workspace safely. The step-by-step procedure takes you through wet sanding, machine polishing, protective coating and beam aiming, with checks at every stage so you can measure the result rather than guess at it. By the end you will be able to restore clarity to most plastic lenses, verify the beam pattern against a wall or beam setter, and advise a customer or decide for yourself when a lens is beyond saving.
Guidance is general and covers many makes. Exact procedures and values vary by model, so confirm them in the factory service information for your vehicle.
Download all 12 sections as a branded PDF to use in the workshop.
Get the app
Quick access from your home screen.