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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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Cruise control not workingViews : 1377 Replies : 8Users Viewing This Thread : |
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#1 |
850R+240GLT = Happiness
Last Online: Oct 5th, 2023 15:29
Join Date: Feb 2010
Location: Birmingham
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After taking my new estate on its first motorway run after some maintenance it turns out the cruise control doesn't work. Is this a common failure? I'd like to get it fixed as I got it used to it in my old 850R. This and the sunroof - add them onto the list haha.
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#2 |
Premier Member
Last Online: Today 14:33
Join Date: Jan 2011
Location: Horne (Nr. Horley)
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Is your car manual or auto? What year? What model? Reason for asking is that the CC works very differently on the later cars with ETM, and also with the manual, the clutch switch is a favourite point of failure.
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#3 | |
850R+240GLT = Happiness
Last Online: Oct 5th, 2023 15:29
Join Date: Feb 2010
Location: Birmingham
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It's a 1996 auto estate 850R. Thanks for your help. |
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#4 |
Member
Last Online: Jun 25th, 2024 16:52
Join Date: Sep 2021
Location: Bath
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Hi Clark,
Yes, it's common for it to fail although it's quite a simple sytem so not hard to fix. I've had the two easiest problems/fixes: 1. Brake pedal switch - a simple pluger switch on the brake pedal that can become dislodged or wear out. Sometimes diagnosed by lifting the brake pedal with your toes whilst engaging cruise. The switch is cheap and easy to replace from within the footwell. 2. Relay - the big red twin relay under the engine fuse box (driver's side). This manifested itself as intermittent operation for me. After that, you're looking at the vacuum system. Belows in the footwell, tubing from the vacuum tree and the dedicated vacuum pump under the battery. I've attached a Volvo doc for the system. CruiseControlSystem.pdf Best of luck, Rich. |
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#5 |
Premier Member
Last Online: Today 14:33
Join Date: Jan 2011
Location: Horne (Nr. Horley)
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^^^WHS^^^
Richmac just beat me to it, but those are exactly the areas I'd check first. Not a clutch pedal switch of course, as you don't have one being an auto, but all those other areas are the ones to go for. Cheers ![]()
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#6 |
New Member
Last Online: Jun 15th, 2023 14:39
Join Date: Dec 2019
Location: Swansea
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Sorry if I'm supposed to create my own thread but this is my first time
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#7 |
Premier Member
Last Online: Today 14:33
Join Date: Jan 2011
Location: Horne (Nr. Horley)
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Suggest you post in the correct section, this is for V70 up to 1999 only, and there are probably significant differences in the systems, as yours has a very different engine.
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#8 |
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Last Online: Today 14:33
Join Date: Jan 2011
Location: Horne (Nr. Horley)
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@Craig - what model do you have? Year, engine size/type etc. please, as the cruise works completely differently on the later models.
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Some people are like Slinkies, they serve no useful purpose but they still bring a smile to your face when you push them downstairs. |
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#9 |
Master Member
Last Online: Jun 28th, 2024 18:44
Join Date: Jun 2012
Location: Hell
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Mine hadn't worked (97 V70R) for a good few months, last time I remember it working was in the Summer. After perusing this thread last night I tested it on my way to work this morning and oddly it was working again without problems. Go figure.....
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