1999 Audi A8 QuattroFACTORY OEM SERVICE PROCEDURE

Electrical Component Locator: Motors

MOTORS LOCATION

Component Component Location
ABS Hydraulic Unit At left front of engine compartment.
Airflow Flap Motor At left rear of engine compartment, on fresh air intake.
Center Vent Adjusting Motor Behind lower left center of dash, on HVAC assembly.
Coolant Pump At left rear of engine compartment, beside fresh air intake.
Cruise Control Vacuum Pump Inside front of left front fender.
Deck Lid Central Locking System Motor Inside right side of trunk lid.
Defroster Flap Motor Behind left center of dash, on HVAC assembly.
Fresh Air Blower At center rear of engine compartment, in fresh air intake.
Fuel Pump In right side of fuel tank, accessible from right front of trunk.
Headlight Washer Pump On bottom of washer fluid reservoir.
Idle Air Control Valve At top rear of engine. See Figure .
Left Center Vent Motor Behind upper left center of dash, on HVAC assembly.
Left Footwell Flap Motor Behind lower left center of dash, on HVAC assembly.
Recirculation Flap Motor At left rear of engine compartment, on fresh air intake.
Rear Footwell Vent Motor Behind lower left center of dash, on HVAC assembly.
Rear Window Shade Motor Below center of rear parcel shelf.
Right Center Vent Motor Behind upper right center of dash, on HVAC assembly.
Right Footwell Flap Motor Behind lower right center of dash, on HVAC assembly.
Steering Column Adjustment Motor (Axial) On right side of steering column.
Steering Column Adjustment Motor (Vertical) On left side of steering column.
Sunroof Motor Above interior light assembly, forward of sunroof.
Temperature Regulator Flap Motor Behind right center of dash, on HVAC assembly.
Windshield Washer Pump On bottom of washer fluid reservoir.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.