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S80 '06-'16 / V70 & XC70 '07-'16 General Forum for the P3-platform S80 and 70-series models |
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Multiple warning lights that extinguish when car is warmViews : 910 Replies : 10Users Viewing This Thread : |
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Jan 6th, 2019, 11:10 | #1 |
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Multiple warning lights that extinguish when car is warm
I have a 2008 MY V70 D5 Geartronic with just under 190K on the clock which I bought with 17K on the clock 10 years ago.
It has recently developed an occasional and annoying electrical issue that only manifests when the car is cold and disappears after about 5 minutes. When cold the dash shows faults on SRS, ABS and TC together with the usual red and amber flashing lights and sounds. Sometimes the indicators stop working and often the speedo and rpm gauges show zero. Throughout this the car drives perfectly normally. The car shows no logged DTCs and has not generated a fault for the last 55K Km (according to TOAD). I'm thinking an intermittent upstream short, possibly a corroded fuse box or CEM. The battery terminals are tight, the battery is a Yuasa and is less than a year old, though I guess it could still be failing. Does anyone recognize these symptoms and can anyone suggest a remedy? Thanks in advance. Apologies this is a repeat of a previous post which I wrote as did not think my first post had gone through. Please ignore - can I delete a duplicate post? Last edited by Si Click; Jan 6th, 2019 at 11:13. Reason: Posted in Error - multiple posts |
Jan 6th, 2019, 13:17 | #2 |
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First stop would be see what voltage you have at cold engine off , Then see what it drops to on start up, Then voltage with loads on engine running.
If the Voltage drops to much the Individual modules can shut down.
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Jan 6th, 2019, 21:36 | #3 |
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^^^^^^^ What he said. If the system voltage is low, the anti-skid/ABS is the first thing to lie on it's back with its legs in the air...
I would check : - Battery - check it - Yuasa has a good reputation on here but my experience of them is they're not very good. Have a Yuasa 5000 (5 year warranty) in my XC90 in it's been replaced twice and it's not even 3 years old. - Alternator - check pulley - if it's not been replaced so far then I would just replace it. If you look on Youtube a very helpful forum member has done a video on how to check and replace it. The pulley has an overrun clutch on it which can either seize or slip when cold... - Check system voltage - as soon as engine is running it should be north of 14v.
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Jan 7th, 2019, 00:33 | #4 |
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Does the fault only happen on mornings after it has rained? Possibly water ingress. Does the fault clear as soon as the engine gauge reach a certain temp every time? Heat related?
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Tek-Emo Villis Emo Bis V70 SE NAV 1.6 D2 2015MY POWERSHIFT, D4162T, 93000miles, RED. /VOL FCR/PEPER OBD2/Acron 9135 OBD2/L.E.D Flasher/VDASH/ANCEL BA301/Topdon Top Scan |
Jan 7th, 2019, 12:08 | #5 |
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Thanks for the replies. I can't check the voltages accurately at the moment as the wife has taken it to Scotland to visit her parents, but she should be back on Wednesday. The battery has one of those green health indicators which was showing green when I checked the battery terminals on Saturday. I also have a rough voltage readout on a USB charger and this normally shows about 12.8v before start and over 14v when charging. I recognise that this is not an accurate measure, it is there to warn of gross faults.
The fault does not seem related to rain, but it is not always obvious when it has rained overnight, so there may be a link. If it is due to a fault within the instrument cluster, is it possible to fit a secondhand one, or do they need to be coded by a Volvo dealer who will insist on a new part? |
Jan 12th, 2019, 10:10 | #6 |
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So before my wife took it to Scotland I drained some of the oil as I inadvertently filled it to over 75% of indicated full when I changed the oil a week or so ago.
Since I did that it has behaved itself with no errant warnings at all despite cold and wet in Scotland. Is anyone aware of a possible causal linkage? |
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