Volkswagen Golf Service & Repair Manual: Operation and safety notes for gas discharge bulbs
 Note
| Never change bulbs if you are not familiar with the
appropriate procedures, safety precautions or tools. |
WARNING
| Risk of death due to high voltage. |
| It is essential that the battery earth cable is
disconnected before any work on parts of the gas
discharge headlight is performed. The parts are marked
with a yellow high voltage symbol. |
| Then switch dipped beam on and off again. This will
eliminate any possible residual voltage. |
| Switch off ignition and all electrical consumers,
and remove ignition key. |
| The gas discharge bulb control unit must never be
operated without a gas discharge bulb. |
| Due to the high voltage, the gas discharge bulb must
be operated only in the headlight housing. Voltages
above 28,000 V occur when igniting the gas discharge
bulb. |
|
WARNING
| Risk of injury due to burns, ultraviolet radiation,
glare and explosion. |
| Due to high temperatures, the absorption of
ultraviolet radiation and risk of glare, the gas
discharge bulb must be operated only in the headlight
housing. |
| Avoid looking directly into the light beam;
otherwise vision may be impaired for a substantial time. |
| Gas discharge bulbs are under high internal pressure
and can explode while being changed. |
| Always wear eye protection and gloves when removing
and installing gas discharge bulbs! |
|
WARNING
| Risk of environmental pollution. |
| Gas discharge bulbs are classified as hazardous
waste. They contain metallic mercury (Hg) and traces of
thallium. |
| Gas discharge bulbs must not be destroyed. Avoid
contact with burst bulbs. |
| Observe disposal regulations. |
| Dispose of gas discharge bulbs only in containers
intended for this purpose at an authorised collection
point. |
|
Caution
| Do not touch the glass part of the gas discharge
bulb with bare fingers. When the light bulb is switched
on, the heat would vaporise the oil of the finger prints
which would then settle on the reflector, impairing the
brightness of the headlight. Wear clean fabric gloves
when inserting a gas discharge bulb. |
| A defective gas discharge bulb must always be
renewed with a new gas discharge bulb of the same type.
The designation appears on the base of the bulb or on
the glass part of the bulb. |
| Properly engage connector during installation and
ensure tight seating of the connection. |
|
|
Please note the following points if test and measuring
equipment has to be used while test driving the vehicle:
WARNING
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Safety precautions when using testing and measuring instruments during a
road test