Fuel Gauge - Sender??

[fieldy]

My fuel gauge went from 1/3 full (200 miles) to nothing. Working fine, jumped out of car for 5 mins, back in, start her up...dead, 0 miles range and BBBBEEEEEPP to refill.

Obviously rule 1 in my techincial hand book of FA is to turn it off and start her again :) Not playing ball.

So im guessing (from reading something ages ago) its my fuel tank sender. My question(s) is to all you knowledgeable folk, has anyone had experience of this, is it a tough job to change and does it cost a lot?

Many thanks in advance for your help with this one. Any info would be greatly appreciated.

Ross

[Peter D]

And your year engine code and exact model is ??

Regards Peter

[fieldy]

Sorry - Reg March 2006 3.0tdi Avant S-line on BMK.

Ross

[Peter D]

You need to remove all the floor of the estate and there is an access plate. Under this is the fuel pump access which contains the fuel levlel sender between pins 2 and 3 should measure 900 to 975 when low and 50 to 104 when full. However a diagnostic check perhaps by an Audi independant can measure this but remember to take it to the chosen place with low fuel. Regards Peter

[fieldy]

You need to remove all the floor of the estate and there is an access plate. Under this is the fuel pump access which contains the fuel levlel sender between pins 2 and 3 should measure 900 to 975 when low and 50 to 104 when full. However a diagnostic check perhaps by an Audi independant can measure this but remember to take it to the chosen place with low fuel. Regards Peter

ok great thanks for your help. It's was on a third yesterday so ill run it this weekend and get it booked in.

Is it quite a labour intensive job? I assume the fuel pump has to come out?

[gupsterg]

Fuel gauge doesn't work - A6 (C6)

Release date: 03-Aug-2010




Customer statement / workshop findings

A6 MY 05 –09.

Not MY 09 > With complaints from MY 09 see TPI 2019724!!!

Tank display not working with event memory entry 'G or G169':

Interruption/short-circuit after plus – static/sporadic
Interruption/short-circuit after ground – static/sporadic

Technical background

Due to the unattached section of cable in the area of the 2-pin plug-in connections (in the fuel tank) between the flange of the electric fuel pump and the fuel gauge sensors 'G' or 'G169', there are vibrations while driving. These vibrations cause micro movements at the pins, which lead to the formation of fretting corrosion on the pins. As a result, there are conductivity interruptions at the pins and finally sporadic or static failure of the tank display.

Production change

2-pole plug-in connections are fixed with chassis numbers after WAUZZZ4F38N147019

Measure

Depending on driving concept (front/quattro, petrol/diesel), the following components must be replaced:

Front-wheel drive: petrol and diesel: connector 4F0 971 847 A - 2x!

Quattro - petrol and diesel: 1x repair kit 4F0 298 200 B –includes 1x cable for vacuum booster, 1x adapter cable, 6x connectors.

Observe the attached vehicle-specific instructions (front-wheel drive, Quattro, petrol, diesel).


Is it quite a labour intensive job? I assume the fuel pump has to come out?

A link for you to view Link:- VAG Audi Å*koda Seat Volkswagen Online Repair Manuals (http://elsaweb.spaghetticoder.org/nav/EN/Audi/A6-100/4F/2/1052/10395/20/16180/)

[Peter D]

So there you go.
Perhaps your Audi Dealer will fix it as a goodwill gesture. Regards Peter

[Flufy]

My fuel gauge went from 1/3 full (200 miles) to nothing. Working fine, jumped out of car for 5 mins, back in, start her up...dead, 0 miles range and BBBBEEEEEPP to refill.

Obviously rule 1 in my techincial hand book of FA is to turn it off and start her again :) Not playing ball.

Ross

Hi Mine did the same last week but a filled it with £50 of fuel and now the gauge reads full/Max and computer range now reads 500miles was reading zero.

If the resistance is 900 to 975 when low and 50 to 104 when full does a short circuit read as full ? and a open circut read as empty ?

[fieldy]

Fuel gauge doesn't work - A6 (C6)

Release date: 03-Aug-2010




Customer statement / workshop findings

A6 MY 05 –09.

Not MY 09 > With complaints from MY 09 see TPI 2019724!!!

Tank display not working with event memory entry 'G or G169':

Interruption/short-circuit after plus – static/sporadic
Interruption/short-circuit after ground – static/sporadic

Technical background

Due to the unattached section of cable in the area of the 2-pin plug-in connections (in the fuel tank) between the flange of the electric fuel pump and the fuel gauge sensors 'G' or 'G169', there are vibrations while driving. These vibrations cause micro movements at the pins, which lead to the formation of fretting corrosion on the pins. As a result, there are conductivity interruptions at the pins and finally sporadic or static failure of the tank display.

Production change

2-pole plug-in connections are fixed with chassis numbers after WAUZZZ4F38N147019

Measure

Depending on driving concept (front/quattro, petrol/diesel), the following components must be replaced:

Front-wheel drive: petrol and diesel: connector 4F0 971 847 A - 2x!

Quattro - petrol and diesel: 1x repair kit 4F0 298 200 B –includes 1x cable for vacuum booster, 1x adapter cable, 6x connectors.

Observe the attached vehicle-specific instructions (front-wheel drive, Quattro, petrol, diesel).



A link for you to view Link:- ElsaWeb - VAG Audi Å*koda Seat Volkswagen Online Repair Manuals (http://elsaweb.spaghetticoder.org/nav/EN/Audi/A6-100/4F/2/1052/10395/20/16180/)

cheers Gup and others.

came across this last night but couldn't convert the workshop hours (until now).

Problem is if its the same one as I read yesterday it says at the bottom if vehicle is out of warranty normally billing applies. Slightly sneaky as the tsb is dated 08/10.

Its back to normal now after going over a bump!

[gupsterg]

Hi mate :) ...



Technical background

Due to the unattached section of cable in the area of the 2-pin plug-in connections (in the fuel tank) between the flange of the electric fuel pump and the fuel gauge sensors 'G' or 'G169', there are vibrations while driving. These vibrations cause micro movements at the pins, which lead to the formation of fretting corrosion on the pins. As a result, there are conductivity interruptions at the pins and finally sporadic or static failure of the tank display.

Production change

2-pole plug-in connections are fixed with chassis numbers after WAUZZZ4F38N147019

A link for you to view Link:- VAG Audi Å*koda Seat Volkswagen Online Repair Manuals (http://elsaweb.spaghetticoder.org/nav/EN/Audi/A6-100/4F/2/1052/10395/20/16180/)

I added the TPI/TSB to show the known issue...

I've sometimes used TPI/TSB's to soften up the dealer on price or allow me some goodwill...

Most software updates for modules I've gained via a TPI/TSB otherwise they look at you as you've just asked for the winning combo of numbers for the national lottery!

I've highlighted the best text which explain why gauge is showing fuel incorrectly (if it is this fault)...

If you check contacts perhaps clean as well and close the gap on the mating connector... Link:- Repairing contacts in connector housings (http://elsaweb.spaghetticoder.org/doc/A.en-GB.A00.5AA0.04/34922477/3)

From what I gather the superseded parts just have a better/improved connection...

ATB
G

[DieTryin']

Hi Ross

Did you get this fixed?
Mine failed today:

VCDS: 00438 - Fuel Supply Sensor 2 (G169)

Cheers Dave

[fieldy]

Hi Ross

Did you get this fixed?
Mine failed today:

VCDS: 00438 - Fuel Supply Sensor 2 (G169)

Cheers Dave

Honestly...no. It self healed itself over a speed hump on Saturday morning and is still working as normal. Expensive month with her last month so was quite enjoying pretending it never happened.

Will probably ring round specialist and try my luck with Audi just so im prepared for its inevitable downfall again soon :)

[DieTryin']

I'll keep my fingers crossed for you!

After my water ingress disaster (same as Gup's) when I had over 20 pages of VCDS print out, I saw the fault code (gauge was fine) but gave it a stern ignoring. But, today it died and is proper dead! It may though be covered under my warranty :biglaugh: I'm not holding my breath, as all the other things that have died in the last 2 weeks weren't.

Good luck!

ATB
Dave

[fieldy]

I'll keep my fingers crossed for you!

After my water ingress disaster (same as Gup's) when I had over 20 pages of VCDS print out, I saw the fault code (gauge was fine) but gave it a stern ignoring. But, today it died and is proper dead! It may though be covered under my warranty :biglaugh: I'm not holding my breath, as all the other things that have died in the last 2 weeks weren't.

Good luck!

ATB
Dave

You were right Dave it died again. :(

Violent swerve left and right revived it but i dont fancy doing that on a french autoroute, 5 up with a roof box next weekend.

Ive given in and im dropping her off at Audi today (just to annoy the sales team). Oh well its only money... (£215 to be exact)

[DieTryin']

You were right Dave it died again. :(

Violent swerve left and right revived it but i dont fancy doing that on a french autoroute, 5 up with a roof box next weekend.

Ive given in and im dropping her off at Audi today (just to annoy the sales team). Oh well its only money... (£215 to be exact)

£215 is good. My local dealership charged £260 (warranty will only pay half due to Audi's massive labour rate, £126/hr).