Question about 2001 Volkswagen Jetta TDI

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03 jetta heater

The heater on my 03 jetta 1.8T does not work there is only cold air coming out can you help me?ac works fine I have the same problem. would it be the same for a 2001 jeta gl?

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  • Jerry Koski
    Jerry Koski May 11, 2010

    1st make sure radiator is full and Also the overflow is setting at the level it is suppose to . Sounds like no water flow to heater core , Feel lines going into fire wall when engine has been running a while and see if one is warm if so you have problems inside not letting the heat to you .. just an idea Jerry

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  • 404 Answers

Hi!
Looks like a classic air lock scenario! you need to perform a system bleed.
Park vehicle on level ground, when cold remove coolant filler cap. Start engine and leave to idle, turn heater to hot blower on full.
When at operating temp stand clear of coolant filler area, listen/watch hopefully gurgling and a boil over, top up when settled with very warm water/coolant, wait as it may do it a couple of times. Check for heat inside vehicle if hot and coolant settled replace cap but watch temp gauge for a while as another air lock may be in the system.
Please press the Blue button when sorted!
Paul 'W' U.K.

Posted on Jan 28, 2009

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A/C - Can't Adjust Temperature Output Control
85 06 01
July 11, 2006
2012432

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Affected Vehicles
Condition
HVAC, Temperature Output Control Cannot Be Adjusted
Customer states cannot adjust temperature and/or A/C is not cold.
Technical Background
The blend door control lever moves freely, but the blend door does not operate.


4148ac5.jpg

A bushing that fits on the lever may have a broken tab/clip, -arrows-, as shown.
This tab/clip may cause the bushing to fall out of the fresh air housing which can result in the door becoming inoperative and result in undesired air temperature.
Production Solution
No production change required.
Service Procedure
Tip:
In the past the entire fresh air housing was replaced because the bushing was not available as a separate part. The bushing is now available as a separate part.
The bushing can be accessed from under the center console.

050cdf9.jpg

^ Remove the panels near the foot wells at the passenger side of the console, -arrows-, as shown.
See Repair Manual, Body-Interior, Repair Group 68 - Interior Equipment for removal procedure.

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^ This will expose the location of the control lever, -arrow-, as shown.

2d9ed98.jpg

^ Re-bolt a new bushing onto the lever, -arrow-, as shown.
^ Re-insert the bushing with lever onto the blend door until it is firmly secured in the housing.
Tip:

1ec1246.jpg

A mirror can be used to aid in identifying the orientation of the blend door when re-securing the bushing in the fresh air housing, -arrow-, as shown.
^ Reinstall panels.

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