Left Temperature Door Motor (V158)
Left Temperature Door Motor (V158)
• The Left Temperature Door Motor is installed only on vehicles equipped with the "Comfort" A/C system.
• Currently in this vehicle, all motors are identical in construction. During the basic setting, the control motors are assigned and adapted corresponding to the switching sequence of the wiring. If this sequence does not conform with the specification, the control motors will adapt incorrectly and the door control will be wrong. Refer to => [ A/C Control Motor Block Diagram ] A/C Control Motor Block Diagram.
• Depending on the production date, there are different versions of the levers and connections on the A/C unit. Refer to => [ Air Conditioner, Levers and Connecting Elements ] Air Conditioner, Levers and Connecting Elements and the Electronic Parts Catalog (ETKA).
Removing
- Switch on the ignition.
- Move the driver seat as far back as possible.
- Adjust the air flow to the footwells on both the driver and passenger side on the Climatronic control module (J255).
• In the "air to the footwell vents" setting, the Defroster Door Motor (V107) moves the connector rod - A - in a position so that the screw - B - is accessible. If the Defroster Door Motor does not move the connector rod - A - into the desired position, remove the control motor if necessary. Refer to => [ Defroster Door Motor (V107) ] Defroster Door Motor (V107).
- Turn off the ignition.
- Remove the storage compartment under the dash panel on the driver side.
- Remove the left footwell vent (driver side). Refer to => [ Left Footwell Vents ] Left Footwell Vents.
- Remove the steering column.
- Remove the pedal assembly and accelerator pedal module.
- Remove the left center vent motor (V110) - B -. Refer to => [ Left Center Vent Motor (V110) ] Left Center Vent Motor (V110).
- Mark the connector - C - (to prevent confusing it with other connectors).
- Disconnect the connector - C -.
- Remove bolts - B -.
- Loosen the pin - D - (on the control motor bracket - E -) from the toothed segment - F - (temperature door shaft) and remove the bracket - E - (with the control motor) in the direction of the arrow.
- Remove the screws - A - and separate the control motor - B - from the bracket - D -.
- Remove the toothed gear - C - from the control motor shaft - D -.
Installing
Installation is carried out in the reverse order while observing the following.
- Mount the toothed gear - C - on the shaft - E - of the control motor - B -.
• The control motor does not have a stop, therefore the toothed gear - C - can be mounted on the control motor shaft at any position.
- Bring the toothed gear - F - (in the temperature door shaft) all the way to the stop into the shown position (by turning in the direction of the arrow).
- Insert the guide - G - (on the bracket - E - with the control motor) into the bracket - H - (on the A/C unit).
- Push the bracket - E - opposite the direction of the arrow to the toothed segment - F - and insert the pin - D - (on the control motor bracket - E -) into the toothed segment - F - (temperature door shaft).
• The control motor and the toothed gear - J - do not have a stop; therefore the toothed gear - J - can be joined to the toothed segment - F - (temperature door shaft) in any position.
- Install the bolts - B -.
- Connect the connector - C -.
- Install the wiring harness so that it cannot come in contact with any moving parts (such as the actuating arm).
- Install the removed parts in the opposite order.
- Switch on the ignition.
- Perform a basic setting and the output Diagnostic Test Mode (DTM) on the A/C system using the Vehicle diagnostic tester in "Guided Fault Finding".
• On this vehicle, the control motors are equipped with electronics. During the first basic setting, a new control motor learns its position on the air conditioner and can then be controlled by the Climatronic Control Module (J255) (currently all control motors are identical). Refer to the Vehicle diagnostic tester in "Guided Fault Finding".
• During the basic setting, the control motors are assigned and adapted corresponding to the switching sequence of the wiring. If this sequence does not conform the specification, the control motors will adapt incorrectly and the door control will be wrong. Refer to => [ A/C Control Motor Block Diagram ] A/C Control Motor Block Diagram.
- Check the Climatronic Control Module DTC memory and erase any displayed malfunction if necessary using the Vehicle diagnostic tester in "Guided Fault Finding".