D1 heated front screen not working.

Hi guys

a couple of weeks ago when we had mild frost the heated screen worked ok but now we are having heavy frost in the mornings it doesn't seem to work anymore the missus drives the car aswell and just in case anything has been switched off is there away of switching it back on or has it packed up, i have looked in the hand book but it doesn't tell you anything any ideas.

graham
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98 d1 300tdi auto.

Have ya checked yr fuses Graham?

Bromsgrove Defender said:

Have ya checked yr fuses Graham?

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Hi bd

no i haven't where are they as i don't know where they are.

graham
_______________
98 d1 300tdi auto.

Graham I've not got a disco, neither do I have the handbook.

The fault you describe sounds like an electrical fault to me so I'd check the fuses first, then the wiring.

To check these you will need to see in the handbook where the fuses are or get a manual. The latter will come in handy if it's not the fuse so you can see what wires belong to what.

cheers bd i will dig the hand book out again and have a look.

graham
_________________
98 d1 300tdi auto.

Does the dash switch illuminate when pressed if it doesn't then you need to check the fuse. I can't help with the location of the fuse none of my books including the owners handbook show it.

making myself sound stupid as usual but do disco 1 have heated front screens if so is it only certain models or am i missing something off mine

My heated front windscreen switch only works if the headlamps are switched on. Is this normal?

Dont forget guys thet the frigging MFU is also involved and it used to have dry joints where it's attached to the back of the fusebox.

It has an autodiagnostic protocol:

Diagnostic Procedure

1. Close all doors and the tailgate.
NOTE: If the oil pressure switch goes open circuit
(engine is started) during the following procedure,
the MFU will exit the diagnostic mode immediately.
2. Press and hold the heated rear screen switch
and switch on the ignition.
3. Release the heated rear screen switch within 2
seconds and the MFU will beep to indicate that it's in
diagnostic mode 1.
4. Press the heated rear screen switch; the MFU
will beep twice. In turn, operate each of the following
switches, heated front screen, rear fog guard lamps,
side lights, headlights, front wiper and rear wiper.
The MFU will beep twice each time a switch is operated.
5. Pressing the heated rear screen again will cause
the MFU to enter diagnostic mode 2.
6. The MFU will provide outputs to the following in
order given below:

Heated rear screen relay energised for 2 seconds

Heated front screen energised for 2 seconds

Courtesy lights energised for 2 seconds

Dim dip relay energised for 2 seconds

Rear fog guard lamp energised for 2 seconds

Headlamp power wash energised for half a second

Front wiper energised for half a second

Rear wipe/wash energised for half a second
7. The MFU will then exit the diagnostic mode.

SHORT ROUND said:

making myself sound stupid as usual but do disco 1 have heated front screens if so is it only certain models or am i missing something off mine

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Yes D1s do, with certain models it was an option others it was standard.

Dom-300tdi said:

My heated front windscreen switch only works if the headlamps are switched on. Is this normal?

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No not normal, but it will only work with the engine running due to the high current it takes.

:doh: what an idiot just found a switch that you can't see for the steering wheel started the car up and pressed the front screen and the switch lite up :doh: anyway thanks every body for your help i just feel fekin stupid now

graham
_________________
98 d1 300tdi auto.

cornish rattler said:

:doh: what an idiot just found a switch that you can't see for the steering wheel started the car up and pressed the front screen and the switch lite up :doh: anyway thanks every body for your help i just feel fekin stupid now

graham
_________________
98 d1 300tdi auto.

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Good just as long as stupid doesn't mind

I feel retribution has been effected and I can now forgive you for the baboon joke.

What's an MFU ? I dont think mine has one. it sounds too high tech, especially as you say it beeps. AFAIK the most sophisitcated electronics in my disco appart from the radio is the pcb for the electric windows.

Dom-300tdi said:

What's an MFU ?

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Its like a MILF but you dont have to do anything.

Dom-300tdi said:

What's an MFU ? I dont think mine has one. it sounds too high tech, especially as you say it beeps. AFAIK the most sophisitcated electronics in my disco appart from the radio is the pcb for the electric windows.

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Multi Functional Unit..........it was fitted after 95 on disco 1 >> http://www.landyzone.co.uk/lz/f8/mfu-unit-97783.html