Hello everyone,

Until now my display was always on. Using the button below on the left you can switch the display to 1 dark 2 symbol/clock 3 functions.

Lately it always goes off after about 3 to 5 minutes and goes dark. I can then continue to control the radiochannels or temperature, but I just don't see it.

If I press the bottom left button 3 times it is there again.

Does anyone have an idea? Display defective? The XF from that time had the same display.

Since I've had the car for 10 years, I'm also familiar with the electronics that always whiz around, causing phenomena to occur that then disappear again.

Thanks in advance for the help.

Christian

 

I've had the same problem on my 2010, is your bluetooth phone feature working? I'd bet money that it is not.

When your bluetooth module goes out it prevent your infotainment screen from working properly, the easy fix is
go into the trunk remove the liner covering the battery, and disconnect the bluetooth modules power.

The other thing that can cause this is a bad alternator/battery, but i'd bet its the bluetooth module.

 

Side note: if you are using a flash drive in your USB port, this can jam things up too.

 

AND certain OBD2 dongles cause a problem on some cars.

 

Thanks for the quick answers!

I just checked the Bluetooth connection. The car connects to the cell phone and I can receive and answer calls in the car. But maybe there is a loose connection when I drive. So I would disconnect the module and take it for a test drive. Which of the 3 cables (1,2,3) should I remove?
When I'm not driving the car, I have a Ctek connected, so the battery should always be full enough. Until recently, I always had a USB stick inserted, to clean the car, which is currently removed.
I currently don't have a dongle on the OBD. That was once, but 2-3 years ago.

Yet another question. In the picture I have a question mark on a very thin positive cable that has a very poor connection. It's white and I've been wanting to reconnect it for some time. Where does this lead? What is it for since it is connected to the battery separately?
Maybe that is the cause?
So I would first replace the white cable and then deactivate the BT module.
Thank you very much and best regards
Christian

 

It's #3,

The phone may work but when the display goes off the
Phone and Bluetooth will stop working.

the wire from the battery is a factory connector
prior to vehicle delivery and not a concern.

 

Thanks in advance for the current tips. I have time next week to check whether the BT connection also breaks down when the screen fails.
If that's the case, I'll install another BT module. I read that it doesn't need to be trained.
I currently have the 9W83-10D893-AB
Is the "latest", newest one the 9W83-10F845-AA?
Then I would get it.
If it worked, I'll report back.
Best regards
Christian

 

Regarding:
Yet another question. In the picture I have a question mark on a very thin positive cable that has a very poor connection. It's white and I've been wanting to reconnect it for some time. Where does this lead? What is it for since it is connected to the battery separately?
I'm thinking:
Is that the wire that connects to the BMS module on the negative battery terminal? If so, I believe that if disconnected the BMS doesn't 'manage the battery' and the smart alternator charging voltage defaults to 13.5v.
Sitting in the pub after a few pints so please excuse if I'm completely wrong

 

Either one will work

 

Hello everyone,

now I had time to take a test drive today. The vehicle battery was fully charged with the Ctek.
Nothing happened for over half an hour. 100m from my garage the screen went dark. I immediately checked the Bluetooth connection with the phone. It was there.
Then I got out and disconnected the large connector on the BT module. The screen appeared to be completely deactivated and the radio no longer worked. I plugged the large connector back into the module and everything worked. Now the screen went dark at shorter intervals. About every 5 to 8 minutes.
I turned off the car and measured the voltage on the battery with a multimeter. 12.39 volts. When the engine is on (idling), the multimeter shows
13.00 volts.
I'm currently recharging with the Ctek and then, tomorrow, measuring the voltage again without ignition, at idle and at 4000 rpm.
Maybe it's not the BT module at all, maybe the alternator charging voltage is too low.
Christian