Front heated screen not working

[PGR]

Hi, my problem is that when I switch the front screen heater on it switches on for about 1 second, it shows on the display screen it’s switched on but then goes of!!! This is a recent problem been working fine when last used. Rear screen works fine. 

I cant work out what fuse/relay controls this?

any help is most welcome.

[superbdreams]

perhaps the battery is low and the system is turning it off.

Get the battery checked

 

[PGR]

Hi Superbdreams

thankss for the response.

the battery is new (6mths). 

the only major work I’ve had done  in the summer is the pump on the climate system, had a huge problem with the electrics after but now sorted?

Is there a fuse for this?

 

PGR

Edited 16 September, 2018 by PGR

[chimaera]

Owner's manual p. 231 says fuse 28 in the engine compartment fuse panel is for the heated 'screen.

 

If you're missing the manual you can download the pdf from Skoda's website: Google is your friend here.

 

What electrical problems did you have during the summer?

[PGR]

When the new pump was installed it wouldn’t function and was diagnosed with a fault. The garage updated it’s software, rediagnosed and identified the problem. Like a fridge now! ❄️❄️❄️

[PGR]

Checked the fuse, it’s ok?

im going to get the battery checked, it should be ok!

Edited 16 September, 2018 by PGR

[superbdreams]

21 hours ago, PGR said:

huge problem with the electrics after but now sorted

 

Aha

With this new information I would first get the battery checked and if ok you have a known starting point.

(whatever that was)

[cssuk]

if its the same as Fords who pretty much pioneered these screens then they wont work unless the temp falls below 5 deg cant say if they are but the last 3 fords i have had which were all commercials did this 

[PGR]

Cssuk

I suppose that’s a possibility, I’ll have to wait a month or two to find out. I did have the battery checked today and it’s on the way out! The alternator is ok! I though I’d changed it (the battery) earlier in the year but it was my wife’s car battery I changed, she has a yeti!

[chimaera]

Ok, so I've dug out the wiring diagrams I have for the Superb.

 

The following are worth checking: Fuses 6 & 28 in fuse holder B beside the battery; relay J47 located on the relay panel underneath fuse holder B.

[PGR]

Thank you chimaera

Checked 28 already will check 6 and j47

PGR

[vborovic]

On 17/09/2018 at 21:32, PGR said:

I though I’d changed it (the battery) earlier in the year but it was my wife’s car battery I changed, she has a yeti!

 

Well, tough luck that both of your cars look very similar, so you can mix one with the other as easily as that ...