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Re: 1999 Audi A4 Climate Control Removal/Installation
You have to remove the trim panel around the stereo/climate control to expose the screws that hold it in place. Once you do that, and the screws are removed, it pulls straight out and unplugs. No need to disconnect the battery and no tricks to it once it slides out.
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SECTION 412-04: Control Components
1998 Contour/Mystique Workshop Manual
REMOVAL AND INSTALLATION
Procedure revision date: 09/14/2001
Climate Control Assembly
Remove the radio chassis. For additional information, refer to Section 415-01.
Remover, Radio 415-001 (T87P-19061-A) Removal
NOTE: Make sure the audio unit key code is available before disconnecting the audio unit electrical connectors and note the audio unit station presets. Using the special tool, detach the audio unit.
Insert the Radio removal tool into the locating holes until they click into place.
Pull the tools gently to the left and right of the audio unit to release the locking tangs.
Pull the audio unit out of the instrument panel.
Remove the audio unit.
Disconnect the power electrical connector.
Disconnect the audioline/speaker electrical connector.
Disconnect the antenna cable.
NOTE: When installing the audio unit make sure the rear support engages on the carrier. To install, reverse the removal procedure.
Enter the audio unit keycode and re-program the pre-set audio unit stations
Remove the floor console. For additional information, refer to Section 501-12.
Floor Console - Vehicles with Automatic Transaxle
WARNING: Wait at least one minute after disconnecting the battery cables before removing the floor console. Failure to follow this instruction may increase the possibility of accidentally deploying the air bag(s) and may cause personal injury. Disconnect the battery ground cable.
What you will need:-
1.Phillips Screw Driver
2.Depending on what stereo system you have, stereo removal keys.
REMOVAL AND INSTALLATION
Climate Control Assembly/heater control unit/
Removal 1. Standard preparatory measures
Make a note of the radio keycode.
Make a note of the preset radio stations. CAUTION: Disconnect the battery negative lead. 2. Remove the radio. 3. Note:The control unit for the heating/air conditioning system, all operating knobs and the air distribution operating switch make up one assembly.
Remove the bezel/control unit.
1 Remove the screws on the top of the unit
2 Unclip the clips either side of the unit
Pull the bezel/unit forwards.
Disconnect the plug. 4. Unclip the air distribution shaft. 5. Remove the heater/air conditioning module and the fan operating switch.
Installation 1. Refit the components in the reverse order. 2. Install the radio. 3. Connect the battery ground lead.
Enter the radio keycode.
Reprogramme the preset radio stations.
Reset the clock.
Carry out a road test to enable the PCM to collect data. 4. Check that the heater/air conditioning operates properly.
Fig. After the negative battery cable is disconnected, remove the
wire terminals from the starter solenoid
Fig. Remove the lower starter mounting bolts...
Fig. ...followed by the upper bolt, then remove the starter
from the transaxle housing
Fig. Lower starter bolt locations-1994 2.0L, 2.0L ABA
Fig. Remove the upper starter bolts
Fig. Mark the location and length of each starter bolt
Fig. Remove the starter
Fig. Close up view of the starter drive gear
Fig. When the solenoid is energized the starter drive is pushed
out and meshes with the flywheel to crank the engine
Note the radio security code, and then disconnect the battery
Raise and safely support the front of the vehicle with jackstands.
If installed, remove the lower engine shield.
The engine must be supported on 1990-97 Passat models as the
starter mounting bolts also support the engine-to-transmission mounting
If necessary, label the small wires before disconnecting them.
On 1990-97 Passat models:
On Audi A4 and 1998-00 Passat models:
Release the number
electrical connector from the starter.
Then remove the nut for the large battery cable and remove the
Loosen then remove the clamp that secures the heat shield to the
Remove the fasteners securing the bracket at the front of the
starter and remove the bracket.
Remove the starter mounting bolts, while supporting the weight of
Pull the starter straight out from the transaxle.
On vehicles with a manual transaxle, there is a bushing where the
starter shaft fits into the bell housing. If the shaft or bushing is
worn or if the starter has been jamming, the bushing should be replaced.
There is a special bushing removal tool available but a small inside
bearing removal tool is usually sufficient.
Install the starter into the transaxle.
Tighten the related starter motor fasteners as follows:
Starter support bracket, M5 nut: 35 inch lbs. (4 Nm)
Starter support bracket, M8: 16 ft. lbs. (22Nm)
Battery cable to solenoid, M8 nut:10 ft. lbs. (13Nm)
hydraulic hose support bracket, M8: 84 inch lbs. (10Nm)
Starter mounting fasteners, M10: 44 ft. lbs. (60 Nm)
Starter mounting fasteners, M12: 48 ft. lbs. (65 Nm)
The balance of the installation is in reverse order of removal.
Be careful not to over tighten the battery cable connection. The
metal is soft and the threads will strip easily.
Lower the vehicle from the jackstands.
Connect the negative battery cable and enter the radio security
Nope - once you have the trim panel off and can unbolt the CC head unit, just slide it out, unplug the connectors, plug in the new unit, and reassemble. Nothing more to it than that - no diagnostics, codes, or setup needed.