VW, Audi, Seat, Skoda: insufficient headlamp range and headlamps dazzle

Data sheet
ManufacturerVW | Audi | Seat | Skoda
Vehicle modelVarious models
SymptomInsufficient headlamp range, headlamps dazzle

Important safety note Technical information and practical tips have been compiled by HELLA in order to provide professional support to vehicle workshops in their day-to-day work. The information provided on this website is intended for use by suitably qualified personnel only.

VW, Audi, Seat, Skoda: insufficient headlamp range or poor illumination of the road after H7 bulb replacement

After the main headlamp bulbs have been changed on the vehicles mentioned above, there may be insufficient illumination of the road or oncoming traffic may be dazzled. This is especially true when using H7 bulbs. There are two reasons for this. Either the headlamp’s bulb socket allows different mounting positions or the bulb has not been correctly inserted (twisted) during mounting. This leads to uncontrolled scattering of the light (Fig. 1).


Therefore, checking that the bulb is installed correctly is strongly recommended after every bulb replacement. The light pattern can be checked using a headlamp tester. Figure 2 shows that the installation has been done correctly. Here, the light/dark boundary and also the asymmetric angle are clearly visible.


This information may certainly also apply to vehicles from other manufacturers.

This may also be of interest to you

Reprinting, distribution, reproduction, exploitation in any form or disclosure of the contents of this document, even in part, is prohibited without our express, written approval; indication of the document source is also required. The schematic illustrations, pictures and descriptions serve only for the purposes of explanation and representation of the instructions and cannot be used as a basis for installation or assembly work. All rights reserved.