Touchscreen continually rebooting

[OxonOwl]

Hi

I have 2016 C4 Picasso and recently, not every trip, the touch screen control centre has taken to restarting about every 2-4 minutes.

Is there anything I can do before have to take it to a garage?

Thanks

[Hell Razor5543]

Hi, and to the forum.

Something that MAY help is if you go for a BSi reset. Sometimes things can 'glitch', and a full system reset can clear 'glitches' (but it won't clear an actual problem). The following link shows you how to do the reset (you can ignore the bits related to suspension; they are there for people who have hydro-pneumatic suspension);

https://www.frenchcarforum.co.uk/forum/ ... 51&t=61997

[GiveMeABreak]

Hi

I have 2016 C4 Picasso and recently, not every trip, the touch screen control centre has taken to restarting about every 2-4 minutes.

Is there anything I can do before have to take it to a garage?

Thanks

It is very likely to do with the unit itself. These systems can restart because of overheating or it can be a corrupt update or an internal problem with the board / components.

Have you tried to update the firmware or any software on it lately?
Have you noticed the volume being limited at all, especially prior to it rebooting.
What was being displayed on the screen before it rebooted? (Navigation / MP3 / Music etc.)

Have you disconnected / changed the car battery lately? If so it is important to respect the timings before doing so in the BSI Reset / Battery Disconnect / Reconnect Procedure to ensure the vehicle systems power down and sleep before the battery is disconnected. The Head Units always remain active for some time after the vehicle ignition has been switched off.

There are an extensive list of fault codes for these systems and there are 6 variations of these head units fitted, depending on options. If you have a fault code then do post it up, but if you don't have access to a comprehensive diagnostic tool and it is not resolved by a BSI reset, then it may benefit from a firmware update that you can get the dealer to do for you if taking it there - you may as well get it updated as they are going to charge you for a diagnostic anyway and it shouldn't take that much longer to do if one is available.

[OxonOwl]

Thanks for the welcome and your replies.

I will try a reset.

Have you tried to update the firmware or any software on it lately?
No

Have you noticed the volume being limited at all, especially prior to it rebooting.
No. If the radio or music is on it stutters slightly before restarting.
The volume is turned down when it restarts

What was being displayed on the screen before it rebooted? (Navigation / MP3 / Music etc.)
It seems like it can be anything.

Have you disconnected / changed the car battery lately?
No

[GiveMeABreak]

Ok so a sign of overheating is volume reduction to reduce the heat from the internal amplifier which is the reason I asked.

If it does it less when the temperature is colder then that may be the reason.

If not then you may have a failing internal Storage / chip.

[GiveMeABreak]

Also, I would check that the firmware is updated. This can fix issues that they become aware of over time. I'm not sure exactly what system you have - SMEGXX or the Connected NAV system, but if unsure the dealer can always advise of the latest update from your VIN.

If you have the Connected Nav, it will use the Tom Tom system and you should have free map updates for life. When you log in to the connected NAV site or supply your VIN, it should list all the latest Map updates and any Firmware needed / available.

[OxonOwl]

Thanks

I don't have the NAV system. That's all I know

[Richard_C]

There are many posts on the c4owners.org forum, under Pic (B78) problems, a couple of recent threads with people reporting the same reboot issue, all with 2016 cars. All started this month which leads to 'so what's changed' discussions. It did get a bit cold, which might lead older batteries to struggle a bit but that seems unlikely as rebooting happens with the engine running.

Speculation includes changes to DAB, more transmitters are getting DAB+ rollout, Some report that using FM radio instead of DAB provides relief. Others wonder of the NHS Covid app, which 'polls' nearby bluetooth devices every few minutes and which was available from late September might be a part of it, one said he removed the app and all was fine. Others have fixed with a firmware upgrade. The same issue is popping up on cactus forum and various Peugeot ones.

For Picassos 2016 marked a big upgrade. Early 2016 (likely late 2015 actual build) badged VTR, Exclusive and variants had the older SMEG unit, Later facelifted 2016 badged Touch - Feel - Flair had a wholly different Connected Nav unit. They look very similar externally. It seems like the issues are with SMEG but some posters are imprecise.

The simplest and free thing you could do for now is try it on FM not DAB, and try it with your phone disconnected. Sadly no definitive answer.

(In a box in my garage I have the old manual tune LW/MW radio from my '67 Hillman Hunter, a car with levers which pulled wires to adjust the heating and a wholly mechanical speedometer. If you mentioned firmware in polite company they would have looked blank or embarrassed. Those simple happy days ....)

[GiveMeABreak]

I also forgot to mention Bluetooth.

Sometimes as smart phone software (IOS / Android) is updated far more frequently than the Head Unit firmware in your vehicle, there can be changes and updates to the Bluetooth profiles. These can sometimes have a negative effect on these touch screen units - until PSA release a later firmware for the infotainment system.

Deleting the Bluetooth phone from the head unit (not just unpairing it - but removing the phone completely) will also delete the cache associated with the phone. Then remove the paring connection on your smart phone.

Restart the Head unit and see if this stops the restarting. If it does - you know that's your issue.

You can try adding the phone again from new and see if that solves the issue - if not repeat and wait until a later firmware comes out for the head unit that includes Bluetooth compatibility updates.

[TooBee]

I also have very recently had headset on my DS3 switching off and re-booting. Out of interest are you listening to DAB radio stations when this happens. Sounds stupid i know, but i usually listen to bbc6 music for a number of months and then recently this problem started. A colleague said it was due to radio data broadcast with signal. He said try another station and problem will not happen. I went to Absolute radio, and no recurrence of fault. Would be interested to know if anyone else has noticed this.

[Paul-R]

Would be interested to know if anyone else has noticed this.

See my post here viewtopic.php?t=66644 fourth down.

I have read that it is to do with the BBC issuing new logos for the national channels (September 30th or thereabouts) so, theoretically, the local BBC stations shouldn't cause a problem. I'd still go to FM though. And then look at updating the Head Unit firmware as a long term solution.