Slipping Clutch
Discussion
The procedure is very simple and is advised to be done if possible at each cold start, start the car as normal in neutral then just wait 10 seconds, you should here a click this is normal, as yours has not been done for some time stop the car and repeat this at least three times, try this first if still having problems let me know there are a few more things to try
Hi Podon sorry I have not responded sooner, I have not been able to get near a laptop or my phone for the last couple of days, there is a chance although slim it is dust built up between the clutch and flywheel, under the car preferably on a ramp , where the bell housing is, you will find a small plate this can be easily removed a blow out with compressed air (normal health and safety stuff such as face mask, gloves and goggles),Then try the clutch relearn three times again, It is a shame you have not been informed of the clutch learn procedure, especially with a tcu remap, as i presume you prefer a more spirited drive, with the kiss point being too great excessive clutch wear can be a problem, It is very important that the procedure is carried regularly as this will improve clutch life as well as the dreaded judder should not appear,
Clutch relearn is for the V8 Vantage with sport shift, there is also a relearn for the vanquish but is not necessary on The DB9 etc as they are a automatic box, Rather than a manual box with hydraulic controls,
Clutch relearn is for the V8 Vantage with sport shift, there is also a relearn for the vanquish but is not necessary on The DB9 etc as they are a automatic box, Rather than a manual box with hydraulic controls,
I am assuming that it is the clutch that is worn now, It will require checking and most likely the clutch replacing, Aston diagnostic equipment can check if the release bearing and clutch kiss point to make sure what it is, I would suggest a trip to a dealer or specialist so it can be road tested and a diagnostic check run,
Sorry Rick. Just one more information. I found on Aston Martin Tech Info the service bulletin SB: 0193. It is about the adaptive learning procedures. There are 2 procedures to follow in order to allow the TCU to learn the flywheel profile.
Procedure A - Loss of Data in the Engine Control Module caused by Power Disconnection or
Module Replacement (Manual and Auto Transmissions)
Enable the Powertrain Control Module to relearn the flywheel profile data as follows:
• Fully warm-up the vehicle (Engine Coolant Temperature above 85°C and Transmission Fluid
Temperature above 50°C)
• Switch Of the Air Conditioning. Adaptive data will not be learned if the Air Conditioning is
on
• Drive the vehicle and increase speed to a constant 70 mph (110 kph)
• Close the throttle fully and allow the vehicle to ‘coast down’ to 35 mph (56 kph) with no
braking intervention (ensure road is safe to do so)
Note:-The coast down from 70 to 35 needs to be done in Normal mode (not Sport or Touch) on
the (Auto) and in 6th gear on the Manual.
• Upon reaching 35 mph (56 kph), accelerate up to a constant 70 mph (110 kph)
• Repeat the accelerate to 70 mph (110 kph) then ‘coast down’ to 35 mph (56 kph), a total of
three times
• The engine controller will then have learned the flywheel profile
Note:
Completion of flywheel learning may be checked using WDS. Monitor the PID ‘Profile correction
learned during this trip’. When this PID switches to 1, flywheel learning is complete.
Note: Other engine adaptive data will be learned during further running of the vehicle.
Procedure B - Loss of Data in only the Transmission Controller (Auto transmission only)
Enable the Transmission Control Module to relearn the gearshift adaptive data as follows:
1. Fully warm-up the vehicle (Engine Coolant above 85°C and Transmission Fluid Temp above
50°C)
2. Switch off the Air Conditioning. Adaptive data will not be learned if the Air Conditioning is
on
3. Confirm that the transmission is in Normal Mode (Not Sport or Touchtronic)
4. Accelerate from rest with light throttle opening and obtain gearshifts 1-2, 2-3 and 3-4 with the
engine speed in the range 1500 – 1800 rpm
5. Continue to accelerate gently to 50 mph (80 kph) so the transmission shifts into 5th gear
6. Gently brake the vehicle to a standstill and hold the vehicle at rest with the footbrake for 15
seconds (ensure road is safe to do so).
7. Repeat steps 3 – 5 a further 4 times. The Transmission Control Module will then have learned
an initial level of gearshift adaptive data
Learning of transmission adaptive data is never fully completed, as the Transmission Controller
continually adapts to varying parameters.
Do you think it will help with my slipping clutch? I have to perform it in Comfort mode or sport mode since my car hasn't normal mode? Thank you very much!
Procedure A - Loss of Data in the Engine Control Module caused by Power Disconnection or
Module Replacement (Manual and Auto Transmissions)
Enable the Powertrain Control Module to relearn the flywheel profile data as follows:
• Fully warm-up the vehicle (Engine Coolant Temperature above 85°C and Transmission Fluid
Temperature above 50°C)
• Switch Of the Air Conditioning. Adaptive data will not be learned if the Air Conditioning is
on
• Drive the vehicle and increase speed to a constant 70 mph (110 kph)
• Close the throttle fully and allow the vehicle to ‘coast down’ to 35 mph (56 kph) with no
braking intervention (ensure road is safe to do so)
Note:-The coast down from 70 to 35 needs to be done in Normal mode (not Sport or Touch) on
the (Auto) and in 6th gear on the Manual.
• Upon reaching 35 mph (56 kph), accelerate up to a constant 70 mph (110 kph)
• Repeat the accelerate to 70 mph (110 kph) then ‘coast down’ to 35 mph (56 kph), a total of
three times
• The engine controller will then have learned the flywheel profile
Note:
Completion of flywheel learning may be checked using WDS. Monitor the PID ‘Profile correction
learned during this trip’. When this PID switches to 1, flywheel learning is complete.
Note: Other engine adaptive data will be learned during further running of the vehicle.
Procedure B - Loss of Data in only the Transmission Controller (Auto transmission only)
Enable the Transmission Control Module to relearn the gearshift adaptive data as follows:
1. Fully warm-up the vehicle (Engine Coolant above 85°C and Transmission Fluid Temp above
50°C)
2. Switch off the Air Conditioning. Adaptive data will not be learned if the Air Conditioning is
on
3. Confirm that the transmission is in Normal Mode (Not Sport or Touchtronic)
4. Accelerate from rest with light throttle opening and obtain gearshifts 1-2, 2-3 and 3-4 with the
engine speed in the range 1500 – 1800 rpm
5. Continue to accelerate gently to 50 mph (80 kph) so the transmission shifts into 5th gear
6. Gently brake the vehicle to a standstill and hold the vehicle at rest with the footbrake for 15
seconds (ensure road is safe to do so).
7. Repeat steps 3 – 5 a further 4 times. The Transmission Control Module will then have learned
an initial level of gearshift adaptive data
Learning of transmission adaptive data is never fully completed, as the Transmission Controller
continually adapts to varying parameters.
Do you think it will help with my slipping clutch? I have to perform it in Comfort mode or sport mode since my car hasn't normal mode? Thank you very much!
Edited by podon on Thursday 20th May 17:34
Hi sorry completely missed this, this is more to do with the adaptive learning of the ecu's and more relevant to when we carry out repairs or update the modules, so less to do with the clutch learn as required in daily usage, It will definitely do no harm to try,but I do not think it will help with the issue you have,
Try here
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
Think this is just for the windows, but the learning technique is similar for the seats iirc.
One I did, the seat had to tilt fully forwards before it would either move backwards or the memory work.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
Think this is just for the windows, but the learning technique is similar for the seats iirc.
One I did, the seat had to tilt fully forwards before it would either move backwards or the memory work.
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