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D3 - Engine Bay Everything under the bonnet |
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#1
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Webasto won't fire, fuel or communication?
Noticed lately that the aux heater doesn't work and give error code in VCDS with "No Flame".
Totally get 3 errors for the Aux Heater: 01406 - No Flame 01336 - Company Data Bus for Comfort System - No signal/communication 01407 - Flame Extinguished And one for the CAN Gateway 01207 Control Module for Auxiliary Heater - No Signal/Communication I wonder if the 01336 and 01207 are related to one another, and are triggered because of the Webasto goes into lock and need to be reset/opened after "No Flame" error? I've taken the Webasto out and apart, and everything looks fine. The glow plug measures 0,5 ohm, with the probes shortened 0,2 ohm, so should give about 0,3 something for the glow plug alone. From what I understand that should be okay? Tried to test run the Webasto from the VCDS, while not connecting the fuel line, and everything seems to start and run as it should apart from that it obviously didn't fire. No diesel came from the fuel line, so I expect maybe the dosing pump to be faulty? Question is, should I follow the communication errors, or are those related to not firing, or should I check the dosing pump? The last question is, where is the dosing pump located? I've searched high and low online but can't find any information about it. The car is a A8 2006 3.0TDI and the Webasto doesn't have a timer or remote.
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2006 Audi A8 3.0 TDI Quattro Sport A8 W12/S8 Brakes front and rear (385mm/335mm) Focal and JBL speakers, Helix amps S8 anti-roll bars front and rear Complete rear LED taillight Xenon fog lights All interior LED S8 rims 9x20" Stage II tune S8 Grill |
#2
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Dosing pump should be under the car near the fuel tank, it should click audibly when working, you should be able to run dosing pump seperately from vcds to check
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2010 Audi A8 4.2 TDI |
#3
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Thanks, I also think it is in the rear somewhere. Any idea of where in vcds I can test run only the dosing pump?
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2006 Audi A8 3.0 TDI Quattro Sport A8 W12/S8 Brakes front and rear (385mm/335mm) Focal and JBL speakers, Helix amps S8 anti-roll bars front and rear Complete rear LED taillight Xenon fog lights All interior LED S8 rims 9x20" Stage II tune S8 Grill |
#4
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I don't know where in VCDS exactly, but there must be an option - probably under output tests in aux. heat
I have used the function in webasto's own thermo test software - there was a function called fuel line prime which ran the dosing pump
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2010 Audi A8 4.2 TDI |
#5
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I'm sure you can enable a pair of timers in the HVAC section of the instruments using VCDS, just a matter of turning them on using the coding, at leeast if you've got no remote then that may be better than nothing
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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 |
#6
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#7
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Not sure what Webasto heater is in the 8 but the cab heater type i have is an Airtop 5000. You can hear the fuel pump clicking when it's running. If it's not been run for a while it can take a few fire ups for it to actually start up. There is a filter in line too somewhere i would have thought. If it had the Webasto thermostat it flashes a fault code that relates to the problem. I downloaded a load of stuff for it from Butlertechnik, service, parts, fitting instructions ect
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1996 A8 4.2 QS. Bose, Solar roof, um...um... rally sport towbar. Now gone to a new home as the Traders 8. Bright yellow bus o love. |
#8
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The full name is Webasto Thermo Top C.
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2006 Audi A8 3.0 TDI Quattro Sport A8 W12/S8 Brakes front and rear (385mm/335mm) Focal and JBL speakers, Helix amps S8 anti-roll bars front and rear Complete rear LED taillight Xenon fog lights All interior LED S8 rims 9x20" Stage II tune S8 Grill |
#9
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This might help along with the 8 fitting guide
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1996 A8 4.2 QS. Bose, Solar roof, um...um... rally sport towbar. Now gone to a new home as the Traders 8. Bright yellow bus o love. |
#10
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my A8 has one of these fitted
are they standard and what does it do and when ?
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Looking for the Holy Grail Audi .. 2018 VW Caravelle Executive T6 2010 A6-C6 3.0tdi LeMans Quattro |
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