Good luck with that. Any reason why you want to do this ?

It's not just a "radio", its a fully integrated head unit that has numerous other functions such as controlling the heating, the charge timers and climate control timers etc...

Without the original head unit functioning you would not even be able to use the temperature up down buttons for the climate control as they work through the software running on the head unit.

 

Thanks for feedback.
Reason is the screen only works first trip after that I cannot get the screen to show.

 

First trip after what ?

When it stops working, what are you doing to get it working again ?

Not a fault I've ever seen reported before.

 

Got in car drove to supermarket 6 miles and parked, screen working ok could see map on journey and rear parking camera display.
Approx 45 mins later return to car for journey home sound from radio ok but the screen was blank.

Seems the only way to get it working again is waiting till next day.
Pushing the screen on/off button has no effect.

 

Sounds to me like you have a faulty display/touchscreen unit. When the temperature warms up, there is a component/joint that fails. I have seen somewhere a thread that deals with replacement touch-screens, it may even be on this board. It is a heavily modified Clarion setup, as @DBMandrake says, the whole thing is almost inextricably tied up with the vehicle's control systems, an aftermarket solution would be an extremely difficult exercise, as an electronics engineer with 50 years experience I wouldn't like to attempt it.

Have a read of this thread: https://www.speakev.com/threads/touch-screen-not-working.157030/#post-3157121
Cheers Tony.

 

Bad SD card?

 

Not sure if there is a SD card on it.

 

If the SD card was completely broken, I think maps wouldn't work at all? But perhaps dirty contacts or something? Perhaps unplugging and replugging might help (with it turned off - removing live SD cards is usually a bad idea).

Is the SD card slot behind the screen - need to access the cd player to access it?

 

If the SD card was completely broken, I think maps wouldn't work at all?

But perhaps dirty contacts or something?

Correct, maps won't work without the SD card but SD cards can become unreliable and as you note the connections could become oxidised especially in a card that sits in the same slot for years never being removed.

Perhaps unplugging and replugging might help (with it turned off - removing live SD cards is usually a bad idea).

You can't swap the SD card when the car is off as I don't think the screen will stay extended when the car is turned off.

Is the SD card slot behind the screen - need to access the cd player to access it?

Just press the bottom right button so that the screen swings out horizontal, then open the little SD card flap next to the CD slow then eject it.

I'd eject and reinsert it a few times in a row to give the contacts some wiping action, if there is some dust or oxidisation causing a problem this should fix it.

Although I can't remember for certain, I think many functions - with the exception of the maps and the memories for the radio, and possibly the charge/climate timers will work with the SD card missing.

So for testing purposes only I would try operating the car without the SD card installed and see whether the screen still goes completely blank. If it doesn't, a new SD card from Nissan might be in order. They're not cheap though - around £130 last time I checked, and coded for your specific car. On the up side, this will also get the map data updated to the latest available.

 

I wonder if LeafSpy would show up a fault code when the unit appears dead?

 

What I have been doing is on first switch on I get telematics services screen with option of touch to ok or decline.
If I do nothing all works ok.
Before I have pressed either button to clear information at start of different journeys which gave me the screen issue.

 

Colin - So you say that if you ignore the nag screen on switch-on it will all work ok? That's truly bizarre.

I therefore think it casts doubt on my heatup theory. BTW You can copy the sd card quite easily using DD utility (linux of course).
I have copied mine use the copy and keep the original pristine just in case. The other thing, if you have a 2016 leaf, they changed the head units 3 times in 6 months, each SD card is different you need to have EXACTLY the right one, my dealer had to have 3 goes before they actually got the correct one for me.

Cheers Tony.

 

Colin - So you say that if you ignore the nag screen on switch-on it will all work ok? That's truly bizarre.

I therefore think it casts doubt on my heatup theory.

Agreed - hard to see how its a heat issue if not pressing one of the buttons causes it not to fail.

BTW You can copy the sd card quite easily using DD utility (linux of course).
I have copied mine use the copy and keep the original pristine just in case.

Guess what I'm probably doing tomorrow...

Of course my original SD card works fine, so this may not help if the SD card is actually the fault, depending on whether there are hard errors with the data or whether the reading of the card is intermittent.

 

Here is jpeg of the screen message which appears to have caused my issue.

 

Here is jpeg of the screen message which appears to have caused my issue.

This is the normal screen every time that the car is turned on as others have already said.

 

That's normally what you get every time you turn the car on.

 

No screen came on this morning at start up then came on after mile.
Car not been used since Tuesday now Friday, temperature outside 5 degrees.
Screen did not come on again after parking.
I have booked this into Nissan later this month for investigation plus a service.
Will let you know the outcome.

 

My idea is connect new bosch Connect 4 nav. unit from actual Leaf ze1 gen and modify trim and holders + can bridge development. Actualy I am looking for unit with good price.

 

Update... Nissan checked and found no faults in system, no update available for software. found unit working but touch screen is not. Requires new radio / head unit.

Any suggestions most welcome

 

There are some touch screens for this unit available on the eBay. Its easy to replace screen.


BTW
I bought bosch 5sr0c headunit from leaf ze1. At the momet I am waiting to connectors and another leaf ze0 headunit trim to cut new frame for bigger ze1 unit in cnc machine.

 

To fault-find this issue requires a bench rig with dummy loads/signals to and from a canbus system, a 12v power supply, aerials and attached speakers. The only place likely to have such a set-up would be Nissan Japan, and I very much doubt they even have such a rig themselves. The production quantities of the various Leaf iterations would not justify the sort of expertise and financial outlay entailed. Added to which the procurement system in Japan means that only the minor subcontractor who designed the av sytem has all the design circuitry. Based on a Clarion headset they added the various interfaces for the canbus and climate control, battery state sensor inputs and other systems controlled by the headset. In other words, an ordinary electronics workshop would not be able to repair this unit.

This in practice means you have 2 options.
1) grit your teeth and pay Nissan's exhorbitant price for a new headset installed.
2) Buy another headset from a wrecked vehicle OF THE SAME YEAR and MONTH as yours.

An alternative would be to find some nerd who loves to tinker with this stuff and who really knows what he's doing and has a spare couple of weeks to track down the actual fault with the headset-a rare beast indeed...

Best of luck, Tony.

 

If got one from a wreck could have same problem plus issues with serial numbers.

Looks like a new alternative unit is best way to go, means I could loose a few features hopefully the ones I have not been able to so far.

 

If you go the Nissan dealer route, make sure they give you all the latest map updates from HERE. The latest one will always be at least three years behind, so you should get 2020/21 maps. Insist on it after they quote you!
Tony

 

Thank you both for your comments very much appreciated.

The replacement touch screen are for unit that have a frozen screen or touch screen only working on one side, unfortunately my screen goes blank.

Have contacted an audio company who is looking into what replacement units are available. He suspects I will loose use of control buttons on fascia but retain controls on steering wheel. Not sure what else I will loose access to.

Was thinking over the suggestion head unit from a wrecked vehicle, would changing just the screen cause any serial number issue?

 

If you replace your faulty unit with:

• new one: need vin pairing , datasets and calibration data. Possible only via dealer or you need Consult app and tool.
• used one: need vin pairing. Possible only via dealer or you need Consult app and tool. Maybe camera calibration, sound config too if there is some difference. (Front & rear parking camera, bose audio)

Easy way: Buy old working unit and use complete display in your unit.

 

It will have to be registered to your car in the TCU and other canbus modules. A decent Hevra garage should be able to do that. Looking at some of the posted videos online the actual physical replacement looks fairly straightforward. I cannot stress enough that you must get a unit from the same month as your car.

 

Have located a second hand unit without SD card.

If I install it is without the SD card will I be able to see if screen works before making changes to my existing unit.

Can I cause an damage to either unit by using it without SD card

As for getting vin pairing done by Nissan they told me they do not deal with clarion as of January 2024. (Edit to add do not)

 

Have located a second hand unit without SD card.

If I install it is without the SD card will I be able to see if screen works before making changes to my existing unit.

Can I cause an damage to either unit by using it without SD card

As for getting vin pairing done by Nissan they told me they do deal with clarion as of January 2024.

1) Yes, you should be able to check the screen without an SD card.
2) No

I have a card replaced by Nissan when I bought mine from the stealer in 2019. The newest maps made by HERE at the time dated from 2016/7. I cloned the card using dd in linux for daily use and I kept the original for backup. I can clone it again for you, but unless your vehicle was built in the same month as mine, it probably won't work. I believe the manufacturing date can be derived from the VIN, but it has a six-month window. The 2016 Leafs had 3 revisions during that year, each with a slightly different head unit. My VIN is SJNFAAZE0U604532(*) and it seems it was manufactured in 2015, but first registered in July 2016.
The year for 2015 is "F" designation, 2016 is "G". The 10th or 11th digit is the year of the model variant.

 

That's good to hear Barfly.
My vin is same except last four numbers 8216.
What I am hoping to do is check screen is working then exchange it for my failed screen so if it works I will not have to worry about the SD card.

 

Update
Did some checks with leaf spy shows and these 2 errors
U121f 0409 multi AV control unit av-87
U1266 0208 Multi AV TCU conn Av-92
Also the second hand Unit I have does have a SD card.
Both units numbers match up only the serial number is different.

On fitting the second hand unit screen works but no sound which I suspect is because of the SD card not registered to my car as seeing message "secure".

Before I start swapping screens perhaps I should try to get SD card recoded if that is possible. Thus removing the 2 errors at the same time.

Does this make sense?

 

Update
Did some checks with leaf spy shows and these 2 errors
U121f 0409 multi AV control unit av-87
U1266 0208 Multi AV TCU conn Av-92
Also the second hand Unit I have does have a SD card.
Both units numbers match up only the serial number is different.

On fitting the second hand unit screen works but no sound which I suspect is because of the SD card not registered to my car as seeing message "secure".

Before I start swapping screens perhaps I should try to get SD card recoded if that is possible. Thus removing the 2 errors at the same time.

Does this make sense?

Have you tried removing those errors with leafspy pro? That may be all you need to do. Another issue may be the connectors. They can be very difficult to actually get to slot home properly. It may pay to check them as no sound is a strange one, unless the head unit you bought is faulty, hope you got a guarantee for a couple of weeks......

Cheers Tony.

 

Thanks again for your help Tony.

The second unit sound works ok using USB and the radio gives lots of hiss as not tuned in.
The screen shows Nissan logo then get red line saying secure.
Get same message using SD card from original unit.
Both SD cards have same numbers on them.
I swapped the screens but no succes.
I removed errors and then got different ones suspect because of no SD card or card from wrong unit.

Looks like I need to go down the vin pairing route, suggestions very welcome.

 

Red line and secure, I have never seen this, it must be a built-in anti-theft peice of code that pairs with the canbus and unless it gets the right handshake reply decides it's in a different vehicle so must be stolen. That is my guess, the sd card will have nothing to do with it, you could just remove it and see what happens, but I'll bet you get the same result.

You say you swapped the screens with no success, do you mean you had the original head unit and put just the screen from the new one in and get the security message? Or did you just get no display? I'm confused.
Tony.

 

"You say you swapped the screens with no success, do you mean you had the original head unit and put just the screen from the new one in and get the security message? Or did you just get no display?

I got no display.

I came across this site which confirms your anti-theft comment NISSAN CAN filter installation – ZELEMAR electronics

Zelemar have confirmed it will solve the problem.

 

"You say you swapped the screens with no success, do you mean you had the original head unit and put just the screen from the new one in and get the security message? Or did you just get no display?

I got no display.

I came across this site which confirms your anti-theft comment NISSAN CAN filter installation – ZELEMAR electronics

Zelemar have confirmed it will solve the problem.

To clarify - You put the replacement screen into your original head unit and still got no display?

or

You replaced the whole head unit with the replacement and got the security message on the display which itself obviously is working?

 

"You put the replacement screen into your original head unit and still got no display?"
Yes

"You replaced the whole head unit with the replacement and got the security message on the display which itself obviously is working?"
Yes

 

In that case you have correctly diagnosed your issues and once a hevra garage has paired the new unit you should be good to go. Congratulations.

 

If I got rid of the anti-theft message by using the Zelemar unit will I still have to have it paired?

 

This from Zelemar:
zelemar

2023-03-18 / 18:55 Reply


Device is not locked to the VIN. Its a challenge-response based thing between the radio unit and bcm. If CAN bus will not be cut, nothing will be messed up in the car, only the navigation unit unlocking will not work, as it will receive conflicting can messages from the emulator and car.