X250 ventilation fan faults/fixes

Discussion in 'Tech/Mech General' started by Techno, Jan 9, 2015.

  1. Techno

    Techno Funster Life Member

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    X250 4 speed ventilation fan faults and remedies.
    Various symptoms occur so lets look at these logically.
    The circuit fuse is no.8 40amp in the engine bay fuse/relay box.
    Between the fuse and the fan is a 30 amp relay in the same box.
    On from the relay is the fan speed selector switch, this switches a bank of resistors (resistor pack) that lives in the main airflow duct near the fan.
    The resister pack gets very hot in use which is why it is placed in the air stream to dissipate this heat.

    So if the fan stops working completely?
    Fuse gone?
    Relay failed?
    Resister pack thermal fuse open circuited?
    Fan motor failed?
    Speed selector switch?

    First check the fuse with a meter.
    Check the relay by borrowing one of the others in the relay box.
    If the fuse was OK and the relay is OK then try a new resister pack.

    If the fan suddenly only works on full speed?
    Replace the resister pack or try closing up the female spades on the electrical connector first, there are 4 connections.

    I've not experienced fan motor failure nor speed selector switch failures myself.

    **Pictures of left hand drive model. (transpose for UK)**
    Fuse box is the same for both
    [​IMG]
    Relay pack low level behind passenger glove box aside of fan motor.
    remove 5.5mm head screw
    [​IMG]
    [​IMG]
    squeeze the tabs on opposite corners and slide the pack in the opposite direction to the screw. It will then drop downwards.
    [​IMG]
    [​IMG]

    Fuse and relay may be different on 2011 onwards models but the principle is the same.
    EDIT in fact this will be pretty much the same on very many vehicles.

    This is deliberately kept very basic.
     
    Last edited: Jan 9, 2015
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  2. Jaws

    Jaws Funster Life Member

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    Cor !
    I aint seen a wire wound like that green one since the days of valve based tele's !
    OK, they were usually cylindrical rather than flat but same principle

    Great write up again Andy (y)
     
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  3. Techno

    Techno Funster Life Member

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    One FUN member has just self repaired their fan as per this article (stopped working completely) and in their case it was the relay.
    I have sourced a genuine new one £2.75 + 90p p&p (y)
     
  4. gailsunnymeed

    gailsunnymeed Funster

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    Yes with your direction and instruction you have a saved us many pounds you are a hero to us x
    Gail and Karen
     
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  5. Techno

    Techno Funster Life Member

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    Saved your Fun membership fee for sure (y)
     
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  6. Drexxer

    Drexxer Funster

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    VW Transporters, suffer from that problem, ok on full speed but bugger all else

    Great fix(y)

    Andy
     
  7. Techno

    Techno Funster Life Member

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    Resister packs very cheap on ebay, I paid £13.55
     
  8. ebo

    ebo Read Only Funster

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    Great article thanks
     
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