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Thread: Warning lights on after under body wash. Scan tool help

  1. 18th April 2015, 07:50 PM #1
    Richardli Guest

    Warning lights on after under body wash. Scan tool help

    Hi all, just got back from Fraser Island and carried out an under body pressure wash, now I have a permanent transmission fault light coming up, also warning lights for hill decent, apply handbrake warning light- even though it is working, stability lights, special programs disabled , suspension is in low mode. Last night the hazard lights and alarm we're going off for no reason. I had to disconnect battery over night to stop it. Today hazard light and alarm problem has resolved by itself but all other problems still evident. , I've been through all the plugs that I can find under the vehicle /chassis area. No water found in plugs.

    Just wondering if anyone else had struck the same problem and advice on a scan tool to purchase. I have a basic launch scan tool but doesn't read any codes on the Disco 3 2.7 tdv6 I want a full function scan tool.

    Assistance would be much appreciated
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  2. 18th April 2015, 07:58 PM #2
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    BMKal
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    Good chance that it will all come good when everything "dries out". If not, try a "hard re-set".

    I had a slightly similar problem with mine a couple of days ago after washing under the bonnet (for the first time). When I locked the car up, the left side indicator globes stayed permanently on. After a little while, and a few unlock / lock cycles, everything returned to normal. Pretty sure that I got water in one of the relays for the extra indicators fitted in the ARB bulbar.
    Cheers .........

    BMKAL

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  3. 18th April 2015, 08:38 PM #3
    Richardli Guest
    Cheers. I was hoping it would dry out but it's over 24 hrs since problem started and it is still evident. What is involved in a hard reset?.
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  4. 18th April 2015, 09:21 PM #4
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    SBD4
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    Did you pressure wash the engine bay? If so you are likely to have gotten some water in the transmission Control module. Make sure you dry it out!

    have a look here:
    http://www.aulro.com/afvb/d3-d4-rrs/...fter-wash.html
    Cheers,

    Sean

    “Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.” - Albert Einstein
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  5. 18th April 2015, 09:23 PM #5
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    LandyAndy
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    From memory of Gordons GOE course there was one connector that was mentioned to be an issue.
    Possibly where the air compressor is(under the gaurd).If nobody else has verified this tommorow I will get my GOE book out of the D4 and look it up.
    Andrew
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  6. 18th April 2015, 09:27 PM #6
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    Quote Originally Posted by Richardli View Post
    Cheers. I was hoping it would dry out but it's over 24 hrs since problem started and it is still evident. What is involved in a hard reset?.
    Remove battery leads then short them together,ie neg lead touch onto pos lead,BOTH disconnected from battery.CAUTION,if you have a second battery that MUST be disconnected BEFORE doing this.
    If indoubt,search hard reset on AULRO for more peace of mind.
    GOODLUCK
    Andrew
    DISCOVERY IS TO BE DISOWNED
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  7. 18th April 2015, 09:29 PM #7
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    Quote Originally Posted by SBD4 View Post
    Did you pressure wash the engine bay? If so you are likely to have gotten some water in the transmission Control module. Make sure you dry it out!

    have a look here:
    http://www.aulro.com/afvb/d3-d4-rrs/...fter-wash.html
    This MAY have been the issue discussed in the GOE course,will check the book tommorow.
    Andrew
    DISCOVERY IS TO BE DISOWNED
    Midlife Crisis.Im going to get stuck into mine early and ENJOY it.
    Snow White MY14 TDV6 D4
    Alotta Fagina MY14 CAT 12M Motor Grader
    2003 Stacer 525 Sea Master Sport
    I made the 1 millionth AULRO post
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  8. 18th April 2015, 10:09 PM #8
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    SBD4
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    Quote Originally Posted by LandyAndy View Post
    Remove battery leads then short them together,ie neg lead touch onto pos lead,BOTH disconnected from battery.CAUTION,if you have a second battery that MUST be disconnected BEFORE doing this.
    If indoubt,search hard reset on AULRO for more peace of mind.
    GOODLUCK
    Andrew
    I learnt a different way to do the hard reset or "full system reset" the other day. I was told that after removing the battery leads, rather than short them together directly, instead, stand on the brake and pull on the high beam switch for 30 seconds to effect the short circuit. Apparently it is safer for the vehicle.
    Cheers,

    Sean

    “Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.” - Albert Einstein
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  9. 19th April 2015, 12:51 AM #9
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    jonesy63
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    Meh! Did they do that on the assembly line - the very first time power was connected?
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  10. 19th April 2015, 01:16 AM #10
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    BMKal
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    Quote Originally Posted by SBD4 View Post
    I learnt a different way to do the hard reset or "full system reset" the other day. I was told that after removing the battery leads, rather than short them together directly, instead, stand on the brake and pull on the high beam switch for 30 seconds to effect the short circuit. Apparently it is safer for the vehicle.
    With battery leads disconnected, I fail to see how standing on the brake and pulling on the high beam switch can possibly effect a short circuit.

    But, no doubt, there's mysteries surrounding these vehicles that I'm yet to learn about.
    Cheers .........

    BMKAL

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