Question about Volkswagen Jetta
If the warm air is not working then the blower motor needs to be checked.If blower motor checks out ok then its quite possible that the blower motor resistor is faulty.But if both the hot and cold air not working then the Then get the ac pressure tested.The ac pressure test will let you know if there is any kind of leak in the ac cooling system.If there is a leak of ac cooling refrigerant then this can be the reason. If the ac refrigerant is checked out low then this can be the one reason,get the refrigerant recharged then check out.If still the same problem then the compressor needs to be checked.Is the compressor turning on or not at all turning.If its not turning on then the compressor relay needs to be checked.If compressor relay checks out ok then its faulty compressor,.Also check out for any kind of vacuum leak.Get all the vacuum line and vacuum hoses checked and confirmed that there is no vacuum leak. But if all the internal problems checked ok then check the ac relay in the fuse box.If the relay is not clicking then it can be the problem.But if relay also checked ok then the ac switch and its connections needs to be checked because you mentioned there is no light or no click. All the electrical parts can be checked by meter.At relay and its connections it will show 12 volts. Thanks. Keep updated for any more query. You can rate this solution and show your appreciation
Posted on Sep 02, 2010
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Posted on Jan 02, 2017
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