F1 clutch percentage wear reading

I would assume 13709 is the %age wear of 13.7%. Mine is worn 21% @ 12000 miles if that helps.
It is 05 so may not have ccm brakes, if it does ask for brake wear as well

 

The dealership did not give you the correct parameter for clutch wear. The parameter that you have displayed is the clutch wear degree. The nominal value for this parameter is 4000. Anything above 4000 means that the clutch is slipping more than normal. Your reading of 13709 means that the clutch is really slipping more than it should. This display is also not from any factory Ferrari diagnostic computer (SD2/3/SDX/DEIS), it is from some aftermarket diagnostic computer.

If you asked them for a clutch life percentage reading, whoever took this reading did not know what they were looking at. The clutch wear will be displayed as a normal percentage, such as 45%. The clutch wear is calculated by the ECU from looking at two other parameters: The self-calibrated closed clutch position and the closed clutch position (new clutch). You subtract one from the other and you get the amount of wear that the clutch has in millimeters. I always look at these two parameters to see if the calculated clutch wear matches the actual measured movement of wear (which is measured by the clutch sensor at the throw-out bearing).

Get someone who knows what the correct parameter to look at is, and re-check your clutch wear, because with that high a wear degree (13709) you may have a worn out clutch.

 

I have been led to believe that the reading is % remaining not % wear. Also many will tell you this is guesswork and is fairly approximate. The only real way to measure clutch wear is pull it out and measure it against a new one. Which you wouldn't do unless you were in for a clutch replacement. Or in my case release bearing seals.

 

Sorry, but what you have been led to believe is incorrect. The clutch wear reading is the percentage of wear. A brand new clutch will have 0% wear, and a completely worn out clutch will have %100 wear.

Usually the F1 system will exhibit shifting problems with wear values above 90%. If the wear reading was reset to 0% when the last new clutch was installed (or original clutch was installed) then the reading is quite accurate (especially when combined with the two closed clutch readings).

 

Brian - as always: Thank you for your excellent contributions to this forum - much appreciated

 

There some people like to cut corner by buying some cheap diagnosis software and think it can out do or do the same as the factory SD2 /3 or the Leonardo , this is the crap you get when your deal with the cheap diagnosis tool it only a simple percentage clutch reading and it can even do that properly

 

A few years ago after I had the clutch/flywheel replaced on my 360, the dealer sent me this reading: Image Unavailable, Please Login