Volkswagen Golf Service & Repair Manual: Welding and soldering on refrigeration systems
| Before welding and brazing on vehicles (in the vicinity of
the air conditioning system components), extract the refrigerant
and then purge the system by blowing through with compressed air
and using nitrogen. |
| The products of decomposition of refrigerants under heat are
not only poisonous but are strongly corrosive, so that pipework
and system parts could be attacked. This refers primarily to
hydrogen fluoride. |
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| A pungent odour indicates that the products of decomposition
mentioned above are already present. Breathing in these
substances must be avoided under all circumstances, or the
bronchial tubes, lungs and other organs could be injured. |
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WARNING
Danger of freezing injuries.
The refrigerant can emerge as liquid or as vapour.
...
In the event of contact with the eyes or mucous membranes,
wash immediately with copious running water and summon an eye
specialist.
In t ...
Other materials:
Introduction
This chapter contains information on the following subjects:
→ Opening or closing the windows electrically  
→ Electric windows – functions  
→ Roll-back function for the electric windows  
Additional information and warnings:
Volkswagen information system â ...
Switching TCS or TCS with ESC on and off
Fig. 142 In the centre console: button
for switching the traction control system (TCS) or electronic stability control
(ESC) on and off manually
Fig. 143 In the centre console: button
for switching the traction control system (TCS) on and off manually (vehicles without
ESC)
First read an ...
Removing and installing backrest heating element -Z7-/-Z9-
Removing
If the backrest padding in a vehicle with seat heating is
renewed, then the respective backrest heating element must also
be renewed.
–
Separate backrest cov ...
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Handling refrigerants
First aid