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Thread: Help! Problem with VW Polo. Should I pay for diagnostic?

  1. #1
    Join Date
    Aug 2007
    Posts
    2

    Default Help! Problem with VW Polo. Should I pay for diagnostic?

    Hi everyone,

    I'm one of the administrators of the forum and I was just wondering whether anyone can help me out?

    I've got a VW Polo and the other day a warning light flashed up (The Eng Management Light signalling emmission warning). I just phoned up my local VW dealer and they said it would cost 45 + VAT just to hook up to the computer and diagnose.

    They asked if the light was solid or flashing? If solid it's ok to drive still, if flashing not. My light is solid so it made me think - could I just be paying them to turn off a light?! Could anyone help me out? Is there a cheaper way I could this? or a way of diagnosing myself?

    Car details are VW Polo 1.4 SE (5 door), 03 Reg and I live near Stockport.

    Many thanks,
    Gavin

  2. #2
    Join Date
    Sep 2007
    Location
    Bedfordshire
    Posts
    23

    Default

    If the light is on permanently my advice is to take it seriously, most garages are able to read the codes, (not just dealers) if the light is on there is definately a fault, an emission fault could damage the catalytic converter if it is left for a long time.

    Many indipendent garages will only charge around 25.00 to read a code.

    BTW, you can not put the light out if there is a fault, it has to be fixed first.

  3. #3
    Join Date
    Aug 2007
    Posts
    2

    Default Thanks

    thanks waggy... think i'll just have to swallow the cost!

  4. #4
    Join Date
    Feb 2007
    Location
    scotland
    Posts
    297

    Default

    if you have rac cover we carry a lap top to plug in to the car ....

    cost = free

  5. #5
    Join Date
    Aug 2008
    Posts
    1

    Default

    I also had the emissions warning light display continuously on a VW Polo 1.4 SE ('53 Reg). It was fixed by a VW main dealer, but it turned out to be a fault with the brake switch.

    You'd think there were more appropriate warning lights to show for that.

  6. #6
    Join Date
    May 2008
    Posts
    8,284

    Default

    This is a good point for the DIY brigade out there.
    Many diesels, especially Vauxhall and Volkswagen, will show the engine management light if the brake pedal switch is faulty. They are notoriously poor on VWs.

    If the engine light comes on have someone press the pedal and check the brake lights are working. Even if just one bulb is out the management light will come on.

    The switch is situated halfway up the brake pedal and a simple twist to remove and refit.

  7. #7
    Join Date
    May 2008
    Posts
    8,284

    Default

    The reason the engine light comes on for a brake fault is that the engine computer shuts down the fuel when you brake. It's a safety issue.

  8. #8
    Join Date
    Sep 2009
    Posts
    3

    Default

    Quote Originally Posted by Hometune View Post
    The reason the engine light comes on for a brake fault is that the engine computer shuts down the fuel when you brake. It's a safety issue.

    I just replace by break light switch since my EPC was on and now the EPC light has cleared ... Soon after I drove the vehicle after about 5mins the engine management light came up.. I am Pissd off now.. If this is to do with the engine computer shuting down how can I get this fixed and how much will it cost me?

    P:S will it clear the engine light if I take off the brake switch and put it in again ?

  9. #9
    Join Date
    May 2008
    Posts
    8,284

    Default

    These brake switches can be a pain as when you turn it to hold it in position an internal mechanism locks the plunger. May be worth trying again. There is a step by step instruction on one of the VW sites because of the trouble this thing causes. Ensure both brake bulbs are okay.
    Incidentally, this light can be caused by just about anything connected to the engine and VW have problems with coolant temp sensors, coils and EGR valves. If you are sure the brake switch is sorted may be time for a diagnostic plug in.
    When I say computer shuts down, I mean the fuel supply is reduced when you brake. It doesn't shut down completely. Hope that's clear.
    Last edited by Hometune; 02-09-09 at 13:13.

  10. #10
    Join Date
    Sep 2009
    Posts
    3

    Default

    Yeah all the brake light are working fine.. Well I will have to do a diagnostic check I guess... Well I just hope there is nothing wrong... I cant be spending on sensors like this... Do golf's have less hassle copared to polo's ??

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