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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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C70 Cabrio: roof only works on battery powerViews : 2311 Replies : 28Users Viewing This Thread : |
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Mar 26th, 2021, 12:14 | #11 |
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Oversensitive tilt sensor?
My drivers handbook adds the "vehicle must be on level ground" or words to that effect - is there a tilt sensor somewhere in the roof system - ie it could be due to an oversensitive alarm vibration sensor... my phone on vibrate is enough to trigger the alarm after central locking the cars with the fobs() if I leave it in either the 2005 C70 or the 2004 V70
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Mar 26th, 2021, 12:46 | #12 | |
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Quote:
An old trick when viewing a car for purchase is to come back from the road test and park with one wheel up on the kerb. Operate the roof and it will.jam -then negotiate a hefty reduction in price as the roof has just failed.
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Mar 26th, 2021, 16:16 | #13 |
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Hi everyone - many thanks for the thoughts and opinions.
I will have a good play around with it, I.e re-check the boot, hand brake etc. It is just really odd and after owning many cabrios, this has a me a little stumped. I shall report back any updates!
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Mar 26th, 2021, 18:44 | #14 |
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If only I had known
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The saddest moment is when the one who gave you the best memories....becomes a MEMORY V70 SE 2004 2.3L T5 Geartronic, C70 2005 2.0T Automatic, Sold 2.4l 20 Valve Automatic Torslander Sold 854 GLT 20v Auto |
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Mar 26th, 2021, 19:43 | #15 |
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Mar 26th, 2021, 23:15 | #16 |
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I have no experience in cabs but i see it says idling speed, is it idling faster than it should be?
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Mar 27th, 2021, 07:46 | #17 |
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The mk1 doesn't normally need the engine running to operate the roof - engine speed is irrelevant. The only reason it is recommended is to prevent a flat battery. The owners manual posted earlier is irrelevant as it is for a Mk2. The only things the two cars share is the Volvo name and model.
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Mar 27th, 2021, 12:14 | #18 |
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With the engine running, the roof module must be getting a false signal from either the parking brake, the boot or ( not sure on this as I have an auto) from the gearbox. I'd get the car diagnostics done first to see if any of the voltages are showing a bad signal.
A volvo mechanic once told my that it doesn't need much to "upset" the roof.
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Mar 27th, 2021, 12:35 | #19 |
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Just a thought - have you tried getting the roof going with the engine off, then starting the car with the roof still 'in transit'?
Or does that sound like a recipe for the roof getting its knickers in a twist? |
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Mar 27th, 2021, 12:47 | #20 |
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If you can lay your hands on or download a wiring diagram for the C70 convertible, take a look at what inputs go to the roof control module. That will at least give you some idea of potential input errors.
Quick questions: Does the roof work ok with the ignition switch in position 1? Does the roof work ok with the ignition switch in position 2 but with the engine off? Regards John
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