‘04 Convertible roof - odd situation

C70mmy · Jun 16th, 2018, 19:51

Hi all,

Tonight I went to put the roof up and the light on the switch just flashed but did nothing. We turned the engine off and the hood went up. We tried this twice in a row.

Why would it raise on the battery only but not when the engine is running?

We’ve had the car since new and this is the first time she’s ever had a roof issue (108k)

Any pointers appreciated!

Tom

pepper16 · Jun 17th, 2018, 15:30

Hi Tom.
Im afraid I don't have any useful advice or experience of this, but I thought I'd least reply as no one else has !
There are members who are good with electrical queries....I am not one of them.
However, if it promotes discussion, I would add in my limited knowledge, that to me it suggests some sort of power drain....maybe due to earthing or wiring issues ?
That is to say....it's not because the engine is running but because key is in that position, thus opening access to other electrical circuitry ?
This is only my first thoughts?
I hope you find the solution.
Best wishes
Dave

SteveSarre · Jun 17th, 2018, 16:10

Hi C70mmy

Have a look at this thread

https://www.volvoforums.org.uk/showthread.php?t=152151

and check the various things that have to be right for the open and close sequences to work.

I have a 2001 and I can open and close the roof no matter what. I don't get any chimes at all. Something may be wrong with mine, but maybe yours is behaving as designed.

Steve

pepper16 · Jun 17th, 2018, 18:00

I'm sure Tom knows the operating procedure for his roof as he has two C70's...one from new.
I was suggesting that it may be to do with electrics and the position of the key.....not so much the fact the engine is running or not.
Despite the instructons...these roofs will function without the engine running...it's just they put a huge hit on the battery.
So maybe what we need is someone with more electrical knowledge than me to follow up on what additional circuits are engaged when the key is in this position...and is this where a leak/discharge could be....and thus roof says no...not enough power ?
As I said earlier...I'm no expert...just my ideas ....?

pepper16 · Jun 17th, 2018, 18:15

Just like to add ...that was still a really useful post with the link ?
Thanks Steve !

Jun 16th, 2018, 19:51	#1
C70mmy Junior Member Last Online: Apr 15th, 2021 12:13 Join Date: Sep 2014 Location: Valencia region, Spain	‘04 Convertible roof - odd situation Hi all, Tonight I went to put the roof up and the light on the switch just flashed but did nothing. We turned the engine off and the hood went up. We tried this twice in a row. Why would it raise on the battery only but not when the engine is running? We’ve had the car since new and this is the first time she’s ever had a roof issue (108k) Any pointers appreciated! Tom __________________ 2004 C70 Convertible 2.0t Manual - Sky Blue Pearl - Granite Leather - Rosewood Trim, blue roof & 17" Comet Alloys.

Jun 17th, 2018, 15:30	#2
pepper16 VOC Member Last Online: Jan 4th, 2020 15:45 Join Date: Jun 2016 Location: pontypool	C70 roof.. Hi Tom. Im afraid I don't have any useful advice or experience of this, but I thought I'd least reply as no one else has ! There are members who are good with electrical queries....I am not one of them. However, if it promotes discussion, I would add in my limited knowledge, that to me it suggests some sort of power drain....maybe due to earthing or wiring issues ? That is to say....it's not because the engine is running but because key is in that position, thus opening access to other electrical circuitry ? This is only my first thoughts? I hope you find the solution. Best wishes Dave __________________ 2005 C70 2.0 T Auto Convertible. 75k miles. 17" Comet C alloys.

Jun 17th, 2018, 16:10	#3
SteveSarre Premier Member Last Online: Yesterday 15:16 Join Date: Oct 2004 Location: London/West Country	Hi C70mmy Have a look at this thread https://www.volvoforums.org.uk/showthread.php?t=152151 and check the various things that have to be right for the open and close sequences to work. I have a 2001 and I can open and close the roof no matter what. I don't get any chimes at all. Something may be wrong with mine, but maybe yours is behaving as designed. Steve __________________ V70 2.5 Turbo AWD Man. 1999 Red V70 2.5 10V Auto 1998 Green C70 T 20V Auto Conv. 2001 Blue, C70 T5 Auto Conv. 2000 Blue V70 2.5 Turbo AWD Auto 1998 Green, V70 2.5 10V Auto BiFuel 1999 Red (scrapped) V70 20v Auto 1999 Green (scrapped)

Jun 17th, 2018, 18:00	#4
pepper16 VOC Member Last Online: Jan 4th, 2020 15:45 Join Date: Jun 2016 Location: pontypool	C70 roof issues I'm sure Tom knows the operating procedure for his roof as he has two C70's...one from new. I was suggesting that it may be to do with electrics and the position of the key.....not so much the fact the engine is running or not. Despite the instructons...these roofs will function without the engine running...it's just they put a huge hit on the battery. So maybe what we need is someone with more electrical knowledge than me to follow up on what additional circuits are engaged when the key is in this position...and is this where a leak/discharge could be....and thus roof says no...not enough power ? As I said earlier...I'm no expert...just my ideas ....? __________________ 2005 C70 2.0 T Auto Convertible. 75k miles. 17" Comet C alloys.

Jun 17th, 2018, 18:15	#5
pepper16 VOC Member Last Online: Jan 4th, 2020 15:45 Join Date: Jun 2016 Location: pontypool	C70 roof issues Just like to add ...that was still a really useful post with the link ? Thanks Steve ! __________________ 2005 C70 2.0 T Auto Convertible. 75k miles. 17" Comet C alloys. Last edited by pepper16; Jun 17th, 2018 at 18:19.

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