C70 roof not closing fully

[Kornish72]

Hi all, I have 2 C70's. I bought one with faulty Stereo, SatNav & Parking sensors. The Stereo will show in the display for 0.5 of a second if you turn it on twice. But nothing happens. I physically removed the LCD display & the 6 disc CD player behind it. I extracted the 6 CD's within & reassembled the whole thing. Sadly nothing changed. I am thinking the Stereo, SatNav & Parking sensors are all linked, to add the car has (not by me) had additional 3rd party parking sensors fitted to the front of the car. I can hear the motor mechanism work on the sat nav display sometimes. I've forced it up but it just motors straight back down. So thats Volvo 1.

Volvo 2 gets purchased at a reduced price because the Roof doesn't work. I'm thinking hmmmmmm at that price I can swap parts. So I get Volvo 2 home, guess what? Some tinkering & the roof works temperamental though it is. The boot always opens & the rear parcel shelf doesn't move down & thats it, you get the roof alarm. I then press the close button & the boot will close. Press the open button again and inevitably after 3-4 attempts the parcel shelf will fold & the roof will open and stores in the boot correctly. The roof open message appears, thats good as no alarms or fault indications show. Although during the transformation the roof fault message constantly shows.

Now for the closing. This usually transforms correctly giving the roof closed message and as on opening, you get the roof failure message throughout the transformation. I can drive off & you can immediately get the warning alarm, roof can be damaged message. Other times you can drive for an hour with all fine. Then the alarm will sound...... It is very frustrating! To add on this 2nd Volvo the yellow roof raise button activates the 2 securing hooks, they rotate but nothing moves. So I think thats linked to the fault?

Oh & I nearly forgot the parking sensors don't work on the 2nd Volvo either. The Stereo does though?

So I am seeking some advice on all these issues please.

Thanks in advance, Adam