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Matt, Mechanical Engineer
Category: Car
Satisfied Customers: 23078
Experience:  BEng hons Mech engineering, in auto industry 22 years
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I have a vow Passat 1.8 turbo petrol that suffers from dim

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I have a vow Passat 1.8 turbo petrol that suffers from dim headlights even though the headlight have been cleaned


As you've already cleaned the lamps

I'd next check the condition of the bulbs and the bulb holders

as they are prone to corrosion in the bulb holder socket which then reduces the voltage

you'll need to remove the bulbs entirely to clean the sockets and examine the bulb for signs of a burnt element ( replace if required)

this how to should be helpful

it shows how to replace the whole lamp but also how to access the bulbs

and if the plastic lens on the lamp is still cloudy then try using one of the headlamp scrub kits such as

they can work wonders

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