Strange blackout

[LedZep]

Hopefully Citroen software engineers, don't claim this as the reason of operating system crash.
https://www.space.com/sun-x2-solar-flare-october-2024

[GiveMeABreak]

I wouldn't be surprised - people tend to blame these phenomena on just about anything!

[LedZep]

I'm afraid if they read this, that we gave in Citroen without our will an idea! We ripped the thread..

[the2ems]

I agree, but unfortunately it's the early adopters of new models that tend to be the Guinea pigs!

Not really a new model though is it, I don’t really know. I assumed it was just an adaptation of a normal C4

[the2ems]

Chased the dealer about the required update yesterday. They responded that they are still waiting for Citroen technical to come up with something. They also have other vehicles waiting for the same update.

[GiveMeABreak]

I agree, but unfortunately it's the early adopters of new models that tend to be the Guinea pigs!

Not really a new model though is it, I don’t really know. I assumed it was just an adaptation of a normal C4

No, a completely different vehicle from the ground up (not a facelift) and shares nothing with the previous model.

[the2ems]

I agree, but unfortunately it's the early adopters of new models that tend to be the Guinea pigs!

Not really a new model though is it, I don’t really know. I assumed it was just an adaptation of a normal C4

No, a completely different vehicle from the ground up (not a facelift) and shares nothing with the previous model.

[dimitrios_citroen]

I had the same issue on a new Citroen C4 (2024).

While stopped at the lights, the car shut down completely and rebooted. I went to the dealer, they were not able to read an error, but they performed a software update.

After driving another 200km, the complete blackout appeared again today while the car was moving. It came back on after 5 seconds on its own. I think the engine did not turn off as I was able to turn the steering wheel during the blackout. This time the multimedia system showed an error that a service is required. However, after shutting off and restarting the car, the error disappeared.

I am going to the dealer again to check.

It is so annoying that one pays so much for all these security features that modern cars have (and especially in a highest priced model), but these blackouts are completely unpredictable and they disable all security features for some time.

[the2ems]

I had the same issue on a new Citroen C4 (2024).

While stopped at the lights, the car shut down completely and rebooted. I went to the dealer, they were not able to read an error, but they performed a software update.

After driving another 200km, the complete blackout appeared again today while the car was moving. It came back on after 5 seconds on its own. I think the engine did not turn off as I was able to turn the steering wheel during the blackout. This time the multimedia system showed an error that a service is required. However, after shutting off and restarting the car, the error disappeared.

I am going to the dealer again to check.

It is so annoying that one pays so much for all these security features that modern cars have (and especially in a highest priced model), but these blackouts are completely unpredictable and they disable all security features for some time.

Let us know how you get on at the dealer.

[the2ems]

Been for a scheduled service today. Still no software update.

[terryd1976]

Hi

Have you tried the fix in

https://www.berlingoforum.com/thread-19980.html


I have an Citroen EC4 2024 and was having the same issue, after reading the above I changed my radio station to a different DAB channel (from a DAB BBC channel) and then to a local FM station. I mostly play mp3's from a USB drive anyway but as soon as I made this change the rebooting of the infotainment and main screen seems to have stopped happening.



Regards

[Paul-R]

A 2024 vehicle will not have the same system as a 2015 vehicle. In 2025 SMEG systems (in various iterations) were fitted. The link shows firmware for a SMEG+ IV2 system but the problem also afflicted SMEG+ systems and the cure was an update of the firmware.

In summary, it may be the same problem on a different system but it's strange that it's just occurred when the reason has been known about for quite a few years. If it's a 2024 vehicle it'll still be under warranty so I would get it straight back to dealer. Let us know how that goes.

[the2ems]

A 2024 vehicle will not have the same system as a 2015 vehicle. In 2025 SMEG systems (in various iterations) were fitted. The link shows firmware for a SMEG+ IV2 system but the problem also afflicted SMEG+ systems and the cure was an update of the firmware.

In summary, it may be the same problem on a different system but it's strange that it's just occurred when the reason has been known about for quite a few years. If it's a 2024 vehicle it'll still be under warranty so I would get it straight back to dealer. Let us know how that goes.

Mine has been back to the dealer. In fact they had it for a week last November, and decided it needed a software update, which hasn’t even been developed by Citroen. It’s been in for service since, and I have chased them up a couple of times, but they just tell me they are waiting on Citroen technical.

[Stickyfinger]

SMEG by name SMEG by nature then

[dimitrios_citroen]

I had the same issue on a new Citroen C4 (2024).

While stopped at the lights, the car shut down completely and rebooted. I went to the dealer, they were not able to read an error, but they performed a software update.

After driving another 200km, the complete blackout appeared again today while the car was moving. It came back on after 5 seconds on its own. I think the engine did not turn off as I was able to turn the steering wheel during the blackout. This time the multimedia system showed an error that a service is required. However, after shutting off and restarting the car, the error disappeared.

I am going to the dealer again to check.

It is so annoying that one pays so much for all these security features that modern cars have (and especially in a highest priced model), but these blackouts are completely unpredictable and they disable all security features for some time.

Let us know how you get on at the dealer.

The dealer performed another update. Since then I had no issues during the last 7-8 months.

The dealer suggested that the reboot happened because the system was trying to update itself automatically (while driving), but the signal reception was unexpectedly lost. They said that if the reboot happens again, then according to instructions given by Citroen, they will replace the antenna.