Citroen C5 X7 general online update

[thundermaster]

Good morning,

Someone told me to do a general online update to my car. The car is a 2009 C5 2.0i petrol auto. Is this OK to do?

Thanks

[wheeler]

Not sure what you mean, are you talking about software updates on the ECU’s?
If so you would need Diagbox + a dealer account to do this. Is there an actual problem with the car? I would not recommend doing software updates on the ECU’s unless there was an actual reason to do it. It does carry some risk & if it goes wrong can brick the ECU.

[thundermaster]

Problem with (new installed) handbrake, it works ok until engine stops. Then 'parking brake faulty' and 'anti rollback system faulty'. I wonder what checks does the car after switching off. I also wonder if there is an update to the ESP unit, so if this is going to solve the problem.

[Paul-R]

Do you have any error codes from a suitable code reader? This the first place to start.

[thundermaster]

I will note them.
Could it be a battery problem? Now I thought about it.
But the battery is from January, previous owner changed it.