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D2 - Interior Electrics Airbags, Sensors, climate modules, instrument clusters, switches etc |
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Thread Tools | Display Modes |
#1
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Blower motor always on!
Recently the blower motor on my 96 A8 has started acting up and refuses to blow at any speed other than maximum while the ignition or engine is on, even when the AC control unit is set to off. At the moment I've worked around this by removing the fuse from the yellow row, column 5.
Now before all this I had no ambient temperature on the instrument panel display, but after pulling the fuse it now shows a constant -27C which told me the ambient temperature sensor was failing. The problem persisted after replacing the G17 ambient sensor behind the bumper. With the fuse back in place the car is as before (Blower motor always on, no ambient temperature on display). The previous owner replaced the dashboard with the facelift version including the AC controller. The instrument cluster is still the preface version. Could there be a mismatch with the connection between the AC controller and the instrument cluster? I got 3 error codes from the HVAC system: 01317 - Instrument Cluster (J285): No Communications 01273 - Fresh Air Blower (V2) 01314 - Engine Control Module: No Communications |
#2
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If the temperature sensor has failed wouldnt that possibly make the fan stay on all the time trying to bring the temperature up to a level it doesn't need to achieve? have you tried just controlling the blower fan on manual controls or won't it respond at all?
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Confidence is the feeling you have before you know better . . . . Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs |
#3
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01273 code and fan always on at full speed is most likely because blower controller/resistor pack is faulty.
Other 2 codes because FL AC unit uses CANBUS for communications with the rest of car but PF car does not have CANBUS and uses K-line + separate signal wires. So you would need to fit CAN gateway that will translate signals.
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure |
#4
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