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Thread: Outside temperature gauge reading 5 degrees too low?!?

  1. #1
    A3 Sportback 2.0 T FSi

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    Outside temperature gauge reading 5 degrees too low?!?

    The outside temperature gauge has suddenly started reading exactly 5 degrees to low, anyone got any ideas?
    It moves up and down as the weather changes but always around 5 degrees out.

    Thanks in advance for any suggestions.

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    Staz's Avatar
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    Did you resolve this issue? Mine has suddenly started reading too high. It's was showing 36.5 degrees this morning!
    8P2 S3

    For advice on Air Con problems please read my FAQs.
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    A3 Sportback 2.0 T FSi

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    No its going in to Crewe Audi for service next week and its on their to do list. I will let you know if they give me an answer.

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    Artimus's Avatar
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    Quote Originally Posted by Staz View Post
    Did you resolve this issue? Mine has suddenly started reading too high. It's was showing 36.5 degrees this morning!
    that's only 2.5oC, about right for snow melt.
    ................................................
    2009 A3 SB 2.0T DSG S line
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    Staz's Avatar
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    Quote Originally Posted by gdbarratt View Post
    No its going in to Crewe Audi for service next week and its on their to do list. I will let you know if they give me an answer.
    Cool, if you can find out which sensor it is then it would be much appreciated.

    Quote Originally Posted by Artimus View Post
    that's only 2.5oC, about right for snow melt.
    No mate, 36.5 degrees C!
    8P2 S3

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    Okay I got VCDS on the car last night and I have the following readings:

    • Fresh air intake temp (G89) -50.0oC
    • Ambient temp (filtered) 37.0oC (this is the same as shown on the DIS)
    • Ambient temp (G17) 41.5oC
    I found some useful info here: Audi Portal: Sensors Diagnostic . Audi A3 8P (2003- ). G89 Описание

    And here: ElsaWeb - Removing and installing ambient temperature sensorG17

    Which sensor may be faulty though? Or is it both?!
    8P2 S3

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    A3 Sportback 2.0 T FSi

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    My car is back from its service and they replaced the temparature sensor for £49 including parts labour and vat, all working fine now

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    Staz's Avatar
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    Quote Originally Posted by gdbarratt View Post
    My car is back from its service and they replaced the temparature sensor for £49 including parts labour and vat, all working fine now
    That's not too bad, any idea which sensor?

    I plan to have a proper look on Saturday.
    8P2 S3

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    A3 Sportback 2.0 T FSi

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    The car was brought back without the service paperwork which they are posting to me, when it arrives Ill post part number replaced.

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    A3 Sportback 2.0 T FSi

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    Got the bill, they changed the Outside Temp Sender (A8Z0 820 535) cost £17.95 for the part and they charged me 18mins labour to change so must be an easy job.

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    Staz's Avatar
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    Right I think this is the temp sensor, near-side and behind the grille:



    is that right anyone?

    If it is it's a defo bumper off job!
    8P2 S3

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  13. #12
    A3 Sportback 2.0 T FSi

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    As they charged just 18mins at garage I doubt the bumper has to come off, must be a simple unplug and replace.

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    Staz's Avatar
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    That's why I'm confused. A Google image search for outside temp sensor brings up sensors that look like mine above but there's no way I can get to that sensor without taking the bumper off. I know it's in slightly different places for different models but I want to be sure before I start taking the front end off!
    8P2 S3

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    I think the A3 is in the wheel arch so wheel off and change, whereas the S3 is behind the grill - hence the bumper off!

    Staz - Did you ever get this sorted? Was it bumper off?
    Last edited by JamesS4cab; 23rd July 2013 at 15:50.
    "Dont get me wrong. Ugly girls need loving. Just not by me."

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    Staz's Avatar
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    Although I have replied to your PM James, I will reply here also for others to see.

    I hadn't got around to sorting this issue but it seems to have fixed itself now the summer is here.

    It's definitely the right sensor though and you'd need to take the bumper off to get to it.
    JamesS4cab likes this.
    8P2 S3

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    JamesS4cab's Avatar
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    Thanks matey - i took a quick look last night and tried to contort my arm to get in from underneath etc but for the sake of my blood and skin, I will just remove the bumper.
    "Dont get me wrong. Ugly girls need loving. Just not by me."

 

 

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