Oil Measurement Not Working
#1
Oil Measurement Not Working
So I've tried on a few occasions to measure my oil level.
Parked, on a level surface, idling with engine at temp. Tried it in park and neutral.
All I get is this error:
Any suggestions? Is there a little trick I'm missing? It won't let me leave this screen on and it reverts to the Vehicle menu after a couple seconds.
Parked, on a level surface, idling with engine at temp. Tried it in park and neutral.
All I get is this error:
Any suggestions? Is there a little trick I'm missing? It won't let me leave this screen on and it reverts to the Vehicle menu after a couple seconds.
#7
Not really. Mine started working with 60C and several seconds of idling at the morning the day after i added some oil and had the same problem. Unfortunately there's no guaranteed "system" with this issue, IMHO.
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#9
According to Porsche....
I had my SA email the tech notes to me. I can't post a PDF so I'll copy/paste here:
Engine oil level measurement in the 991 GT3
INFORMATION 1
With the 991 GT3, it is possible to perform dynamic measurement during idling phases when the engine is at operating temperature.
- The oil level measurement method described below is possible because of the dry*sump lubrication system and the associated design of the oil tank and the sensor.
NOTE: Dry sump lubrication. Engine damage due to overfilling.
- Fill in engine oil only when the engine is not running.
- Opening the rear lid for at least 15 seconds will reset the engine oil level in the instrument cluster.
- Owing to the dry*sump lubrication system of the 911 GT3, the oil level can be determined only while the engine is running.
Sensor
- The sensor consists of an ultrasound sensor with an integrated evaluation unit and a temperature sensor for measuring the oil temperature.
- A measuring cup with a supply bore at the bottom end and a vent bore at the top end is fitted over the ultrasound sensor.
- The supply bore is supplemented with a meandering structure, which permits measurement over a large operating range.
- This is necessary from a technical viewpoint in order to permit reliable measurement.
MEASURING LOGIC: Dynamic measurement
INFORMATION 2
If the rpm or acceleration condition is exceeded during the idle speed phase, no oil*level value will be recorded during the next 40 seconds.
How?
Meet preconditions for more than 2 minutes:
- Vehicle standstill
- Rear lid closed
- Engine running with speed < 1,000 rpm
- Oil temperature at the oil*level sensor 85 ... 110 °C (185 ... 230 °F)
- Longitudinal and lateral acceleration < 0.5 m/s2 or inclination < 3°
The most recently determined valid value is displayed in the instrument cluster. The measured values are averaged over a specified number of valid measurements.
Display in instrument cluster
The measurement result is transferred to the instrument cluster via CAN.
- The result is displayed in the instrument cluster.
- This value can always be displayed, even if only the ignition is switched on.
- If an oil level is displayed, this was valid during the last measuring phase.
All determined measured values are discarded:
- If the rear lid is open for more than 15 seconds.
- Oil may have been added. OR
- If the vehicle has travelled a certain distance and no oil level measurement was performed. The distance depends on engine speed and temperature values (guideline value approx. 300 to 400 km/186 to 249 miles).
- The oil level can now no longer be seen in the display at first.
- The message Oil level information currently unavailable is output. When the engine is cold, this message continues to be displayed until the oil temperature (> 85 °C/185 °F) permits a valid measurement.
Engine oil level measurement in the 991 GT3
INFORMATION 1
With the 991 GT3, it is possible to perform dynamic measurement during idling phases when the engine is at operating temperature.
- The oil level measurement method described below is possible because of the dry*sump lubrication system and the associated design of the oil tank and the sensor.
NOTE: Dry sump lubrication. Engine damage due to overfilling.
- Fill in engine oil only when the engine is not running.
- Opening the rear lid for at least 15 seconds will reset the engine oil level in the instrument cluster.
- Owing to the dry*sump lubrication system of the 911 GT3, the oil level can be determined only while the engine is running.
Sensor
- The sensor consists of an ultrasound sensor with an integrated evaluation unit and a temperature sensor for measuring the oil temperature.
- A measuring cup with a supply bore at the bottom end and a vent bore at the top end is fitted over the ultrasound sensor.
- The supply bore is supplemented with a meandering structure, which permits measurement over a large operating range.
- This is necessary from a technical viewpoint in order to permit reliable measurement.
MEASURING LOGIC: Dynamic measurement
INFORMATION 2
If the rpm or acceleration condition is exceeded during the idle speed phase, no oil*level value will be recorded during the next 40 seconds.
How?
Meet preconditions for more than 2 minutes:
- Vehicle standstill
- Rear lid closed
- Engine running with speed < 1,000 rpm
- Oil temperature at the oil*level sensor 85 ... 110 °C (185 ... 230 °F)
- Longitudinal and lateral acceleration < 0.5 m/s2 or inclination < 3°
The most recently determined valid value is displayed in the instrument cluster. The measured values are averaged over a specified number of valid measurements.
Display in instrument cluster
The measurement result is transferred to the instrument cluster via CAN.
- The result is displayed in the instrument cluster.
- This value can always be displayed, even if only the ignition is switched on.
- If an oil level is displayed, this was valid during the last measuring phase.
All determined measured values are discarded:
- If the rear lid is open for more than 15 seconds.
- Oil may have been added. OR
- If the vehicle has travelled a certain distance and no oil level measurement was performed. The distance depends on engine speed and temperature values (guideline value approx. 300 to 400 km/186 to 249 miles).
- The oil level can now no longer be seen in the display at first.
- The message Oil level information currently unavailable is output. When the engine is cold, this message continues to be displayed until the oil temperature (> 85 °C/185 °F) permits a valid measurement.
#11
Fantastic info, thank you!! So the reason some folks might not be getting a reading may simply be that they are on a slight incline, or not waiting the full 2 minutes, or not completely up to 185+ degF.
I don't mind the system, personally (sounds like a trade-off of having dry sump in the first place), but it would certainly be better if the "no measurement available" message more accurately told you a list of reasons why (e.g., wait 35 more seconds, or oil not yet at 185 degF, or inclination detected, etc.).
I don't mind the system, personally (sounds like a trade-off of having dry sump in the first place), but it would certainly be better if the "no measurement available" message more accurately told you a list of reasons why (e.g., wait 35 more seconds, or oil not yet at 185 degF, or inclination detected, etc.).
I had my SA email the tech notes to me. I can't post a PDF so I'll copy/paste here:
Engine oil level measurement in the 991 GT3
INFORMATION 1
With the 991 GT3, it is possible to perform dynamic measurement during idling phases when the engine is at operating temperature.
- The oil level measurement method described below is possible because of the dry*sump lubrication system and the associated design of the oil tank and the sensor.
NOTE: Dry sump lubrication. Engine damage due to overfilling.
- Fill in engine oil only when the engine is not running.
- Opening the rear lid for at least 15 seconds will reset the engine oil level in the instrument cluster.
- Owing to the dry*sump lubrication system of the 911 GT3, the oil level can be determined only while the engine is running.
Sensor
- The sensor consists of an ultrasound sensor with an integrated evaluation unit and a temperature sensor for measuring the oil temperature.
- A measuring cup with a supply bore at the bottom end and a vent bore at the top end is fitted over the ultrasound sensor.
- The supply bore is supplemented with a meandering structure, which permits measurement over a large operating range.
- This is necessary from a technical viewpoint in order to permit reliable measurement.
MEASURING LOGIC: Dynamic measurement
INFORMATION 2
If the rpm or acceleration condition is exceeded during the idle speed phase, no oil*level value will be recorded during the next 40 seconds.
How?
Meet preconditions for more than 2 minutes:
- Vehicle standstill
- Rear lid closed
- Engine running with speed < 1,000 rpm
- Oil temperature at the oil*level sensor 85 ... 110 °C (185 ... 230 °F)
- Longitudinal and lateral acceleration < 0.5 m/s2 or inclination < 3°
The most recently determined valid value is displayed in the instrument cluster. The measured values are averaged over a specified number of valid measurements.
Display in instrument cluster
The measurement result is transferred to the instrument cluster via CAN.
- The result is displayed in the instrument cluster.
- This value can always be displayed, even if only the ignition is switched on.
- If an oil level is displayed, this was valid during the last measuring phase.
All determined measured values are discarded:
- If the rear lid is open for more than 15 seconds.
- Oil may have been added. OR
- If the vehicle has travelled a certain distance and no oil level measurement was performed. The distance depends on engine speed and temperature values (guideline value approx. 300 to 400 km/186 to 249 miles).
- The oil level can now no longer be seen in the display at first.
- The message Oil level information currently unavailable is output. When the engine is cold, this message continues to be displayed until the oil temperature (> 85 °C/185 °F) permits a valid measurement.
Engine oil level measurement in the 991 GT3
INFORMATION 1
With the 991 GT3, it is possible to perform dynamic measurement during idling phases when the engine is at operating temperature.
- The oil level measurement method described below is possible because of the dry*sump lubrication system and the associated design of the oil tank and the sensor.
NOTE: Dry sump lubrication. Engine damage due to overfilling.
- Fill in engine oil only when the engine is not running.
- Opening the rear lid for at least 15 seconds will reset the engine oil level in the instrument cluster.
- Owing to the dry*sump lubrication system of the 911 GT3, the oil level can be determined only while the engine is running.
Sensor
- The sensor consists of an ultrasound sensor with an integrated evaluation unit and a temperature sensor for measuring the oil temperature.
- A measuring cup with a supply bore at the bottom end and a vent bore at the top end is fitted over the ultrasound sensor.
- The supply bore is supplemented with a meandering structure, which permits measurement over a large operating range.
- This is necessary from a technical viewpoint in order to permit reliable measurement.
MEASURING LOGIC: Dynamic measurement
INFORMATION 2
If the rpm or acceleration condition is exceeded during the idle speed phase, no oil*level value will be recorded during the next 40 seconds.
How?
Meet preconditions for more than 2 minutes:
- Vehicle standstill
- Rear lid closed
- Engine running with speed < 1,000 rpm
- Oil temperature at the oil*level sensor 85 ... 110 °C (185 ... 230 °F)
- Longitudinal and lateral acceleration < 0.5 m/s2 or inclination < 3°
The most recently determined valid value is displayed in the instrument cluster. The measured values are averaged over a specified number of valid measurements.
Display in instrument cluster
The measurement result is transferred to the instrument cluster via CAN.
- The result is displayed in the instrument cluster.
- This value can always be displayed, even if only the ignition is switched on.
- If an oil level is displayed, this was valid during the last measuring phase.
All determined measured values are discarded:
- If the rear lid is open for more than 15 seconds.
- Oil may have been added. OR
- If the vehicle has travelled a certain distance and no oil level measurement was performed. The distance depends on engine speed and temperature values (guideline value approx. 300 to 400 km/186 to 249 miles).
- The oil level can now no longer be seen in the display at first.
- The message Oil level information currently unavailable is output. When the engine is cold, this message continues to be displayed until the oil temperature (> 85 °C/185 °F) permits a valid measurement.
#12
How much would it have cost Porsche to add a real dipstick to go along with this video game? I guess in the old days, plenty of people had bad readings due to checking with the motor not running or not hot enough or not level enough. But I hate to rely on electronics for something so fundamental.
The following users liked this post:
Madisongy (12-09-2020)
#13
I don't mind the system, personally (sounds like a trade-off of having dry sump in the first place), but it would certainly be better if the "no measurement available" message more accurately told you a list of reasons why (e.g., wait 35 more seconds, or oil not yet at 185 degF, or inclination detected, etc.).
#15
So depending on your driving pattern, you could be seeing the display of a reading from many days ago.