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Mk2.5 Radio/nav Screen Blank

mk2.5 screen blank radio/nav

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#1 SquirrelX

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Posted 12 December 2013 - 04:15 PM

Hi All,

 

A couple of days ago, just when the freezing at night season started (in case it might be relevant), I noticed that when I open the car, the radio/nav/phone/etc. screen in the middle remains blank, whereas it usually shows the time. No change when pressing any button there, or when trying opening/starting the car again half a day later (it used to fix the going-mute-while-playing-an-mp3 issue). The car otherwise works normally, the small dashboard screen shows what it needs to.

 

I checked the fuse (no 108 in the manual, in case it helps) but it was ok.

 

Is there anything I can quickly do/check myself before taking it to the garage?

 

Thanks in advance!



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#2 jeebowhite

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Posted 12 December 2013 - 04:42 PM

If you remove the stereo and just ensure that all connections are secure. It could be coincidence, or it could indicate moisture has gotten into the loom / radio.



#3 SquirrelX

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Posted 13 December 2013 - 09:33 AM

Thanks! I´ll do that. I guess I don´t need special tools to get the stereo out...



#4 jeebowhite

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Posted 13 December 2013 - 11:14 AM

Just removal keys, pick em up off ebay for a fiver!



#5 Preee

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Posted 14 December 2013 - 09:42 AM

Pull the front fasia off and then 4 screws to remove you won't need special removal tools.



#6 SquirrelX

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Posted 14 December 2013 - 09:59 AM

Thanks for the info.

 

UPDATE: I was planning to check the unit this morning, after going for a small shopping, and the car suddenly wouldn´t start. The dashboard lit up and the battery, engine, etc. lights stayed on, and after trying to start a couple of times even getting there seems to be a problem (flashing digits, shaking speedometer ´clock hand´). I´m contacting my local garage but I´m wondering if this might be battery+cold only, or it indicates something more serious.



#7 Preee

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Posted 14 December 2013 - 10:20 AM

Could well be the battery , have you had it tested?



#8 SquirrelX

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Posted 14 December 2013 - 10:29 AM

I´m not sure if they checked it a month ago when they did something they call the ´small service´, I haven´t managed to reach the garage yet.

Otherwise I´m stuck in front of the house now without the tools to check it or charge it, so can´t confirm whether it´s charged at the moment...

But I´ll post an update when I figure something out.



#9 jeebowhite

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Posted 16 December 2013 - 10:14 AM

Probably is the battery. Just check that the battery terminals are secured. Its possible that one is loose (been seen before). You probably just need a jump start (booster pack) And then just leave the car to run for 15 - 20 minutes to allow it to charge the battery.



#10 SquirrelX

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Posted 17 December 2013 - 11:02 AM

So, battery replaced, the car starts again.

 

But, the radio/nav module is still blank, and battery and engine leds are on...

When I enter diagnostic mode, I get the following errors and codes, I´m wondering if you guys have any ideas about them.

 

 - I´m getting a FAIL with NVM EEPROM lvl. No clue what this means or what to do about it.

 

 - DTC 9318 Low battery - I guess this is the remainder from the old battery, because the test shows the new batter to be at 12.2V (I´ll need to figure out how to remove the code then)

 

 - DTC 9681 PATS Transceiver signal not received (not connected, damaged, wiring). I don´t really know what this is. Some other forum suggested checking fuse 61 in particular, but I can´t find that in the car´s manual. I have fuses 1 to 36 and 100 to 143 listed in there. Any ideas?

 

Thanks!



#11 jeebowhite

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Posted 17 December 2013 - 01:57 PM

OK so the two errors you see there are most likely from the failed starting of the car with the old battery.

 

If the engine lights and battery lights are on, there is something else amiss. Did you get a silver calcium battery?



#12 SquirrelX

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Posted 19 December 2013 - 08:12 AM

Thanks.

I was a bit quick with my previous response, the lights actually disappeared next time I started the car, and it´s been working ok since, in the sense that I´m not getting any strange behaviour. I don´t really remember what the battery is like, I just went to Halfords, told them to give me compatible one to what I was holding in my hands, put it into the car and was happy that the engine started.

 

As for the the stereo unit, I removed it, and I don´t think it went blank because of loose connections, because it was quite an effort to pull those plugs, especially the one with the many small cables and the middle one (not sure what that is, but interestingly I didn´t see such cable in the youtube video about removing the unit, though that one was without the nav screen).

 

Can you perhaps say something about the EEPROM fail issue as well? Might that be connected to the stereo/nav unit, or is that something else? So far I couldn´t find much about what to do with that.

 

Thanks!



#13 jeebowhite

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Posted 19 December 2013 - 11:13 AM

that EEPROM Fail error, was that displayed on the instrument cluster?



#14 SquirrelX

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Posted 20 December 2013 - 09:49 AM

Yes it was, when I entered diagnostic mode and went through all the checks. That´s also where I say the two DTC errors.

NVM EEPROM lvl FAIL 0001



#15 jeebowhite

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Posted 20 December 2013 - 10:23 AM

Sounds like the instrument cluster has a fault. You might find yourself needing to replace it at some point.

 

Have you had any starting issues, or running issues at all outside of this?



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