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After service Oil issuesViews : 2571 Replies : 22Users Viewing This Thread : |
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May 28th, 2019, 15:14 | #11 |
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Well I went to local garage and they checked the oil by draining it out and seeing how much there was. Then refilled and reset the sensor took it for a test drive and it seems to have sorted it out. So cancelled my appointment with Volvo. But will keep an eye on it for the next fee days just incase it comes back.
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May 28th, 2019, 15:22 | #12 | |
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May 28th, 2019, 15:24 | #13 |
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May 29th, 2019, 20:54 | #14 |
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When changing oil and filter you must reset oil calculated level
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May 29th, 2019, 21:09 | #15 |
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I realise that is the official instruction, but does anyone know why? I really don't get why the electronic dipstick has to be reset at every oil change. If it's really super accurate with no drift then surely it should be set during production and then never again touched? Resetting it at every change after the new oil has been loaded is just asking for trouble.
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May 30th, 2019, 09:08 | #16 |
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According to the text in VIDA, the instrument cluster oil level indication displays an average of the last three drive cycles. It will self correct without being reset, but because the indicated reading can be influenced by emptying and refilling the sump, especially if the car is also connected to VIDA and software updates or other service operations are being carried out which can cause the reading to deviate, the facility to software reset it exists to prevent spurious readings being presented to the customer immediately after a service until the system has had time to average its readings.
Yes, it is a stupid system, particularly as the oil level sensor itself sends accurate readings continuously. So designing the instrument indication to only work on readings averaged over a much longer period is dumbing things down to the extreme IMO. At least for the VEA engine cars though, you can read the oil level directly from the sensor using the Torque android app with this custom PID: Name "ShortName", "ModeAndPID", "Equation", "Min Value", "Max Value", "Units", "Header", "startDiagnostic", "stopDiagnostic", "Scale" "Engine Oil Level", "Oil Level", "0x22da63", "float32(A:B:C)", "0", "65", "mm", , , , "1" VIDA says this regarding the sensor levels: "The vehicle must be located on a level surface and with the engine off for a while so that the read-out value is reliable. The time depends on the current oil temperature as hot oil runs down into the trough quicker than cold oil. The longer the engine is off, the more reliable the value from the sensor is. If the oil temperature is below 80°C read off after 5 minutes minimum. Hint: The 20 mm oil level (4.0 litres + 0.4 litres in the filter) corresponds to the parameter for low oil level (yellow information lamp) and 12 mm (3.7 litres + 0.4 litres in the filter) corresponds to the parameter for critically low oil level (red warning lamp). The 51 mm oil level (5.4 litres + 0.4 litres in the filter) corresponds to the parameter for high oil level. The parameters apply at an oil temperature of 20°C." My car (T2) had a 46mm oil level after its first service, and a 39mm oil level after its second service. Looking at the recommended service refill quantities for the VEA engines in the owners handbooks, the quantity keeps changing depending which model year handbook you read! It was originally 5.4 litres, then 5.9 litres and now stated as 5.2 litres. My Volvo dealer has been unable to explain why the recommended levels keep changing, but I intend doing my own oil changes from now on and will aim for 40-45 mm reading from the sensor after the filter has been refilled. |
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May 30th, 2019, 10:11 | #17 | |
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May 30th, 2019, 10:34 | #18 | |
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So the dealer resets the system to prevent that and the averaging as presented to the driver continues from a new baseline. Without the reset, the oil status presented to the driver will normalise after a while. So as long as you are certain that the oil level is actually OK (by knowing how much oil you have put into the sump and reading the level directly from the level sensor in real time during/after refilling, e.g. with Torque or suitable diagnostic equipment) you can ignore the warning. Obviously dealers don't want to hand cars back to customers with warning or error messages displayed, so they reset the system first. |
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May 30th, 2019, 11:27 | #19 | ||
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I recently had an 'add 0.5L' message, not too long after a dealer service. Have added 0.5L of the correct oil, e-dipstick is now on max but the level (read using the Car Scanner app) is only 25.68mm (so a fair way down from what you're suggesting as the refill target). Thanks for adding this VIDA info.
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May 30th, 2019, 12:39 | #20 | |||
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I have access to other aftermarket diagnostic equipment and the oil level as reported by Torque with that PID agrees with the CEM oil level reported by the other scanner, so I am happy with it. Quote:
Incidentally, from what I can gather, the dashboard oil level gauge on the VEA engine cars only has three states: OK, add oil or overfilled. The graphic of a gauge is a misrepresentation in as much as the indicated oil level won't change outside of those three parameters. More dumbing down for the driver Have a read through this link. It's quite long, but interesting! https://forums.swedespeed.com/showth...92#post2479292 |
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