tiago
New Member
Posts: 2
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Post by tiago on Aug 17, 2024 12:08:39 GMT
Hi all.
Why is this feature not available to change its settings in the RS3 8V.1???
Before the subscrition i made the app download and run the app to see its options. I found the "ESC OFF PERMANENTLY" setting with 9 options, factory standard is "ASR OFF/ESC SPORT" and the one that should came and desired, atleast in a RS model, it is "ASR OFF/ESC OFF". First aid is engaged with one ESC button press and the second aid is engaged with the long ESC button press.
I made OBD11 subscrition and bought the OBD device just to control this feature, which for me it is a serious fault from Audi manufacturer.
I just spent around €10k on repairs due to a software fault that led to a track accident. After 2 hotlaps the brake oil boiled. And this with the AP CP9660 calipers, front 380x34mm motorsport brake discs, rear 356mm brake disc, endless ME22 front and rear, stainless steel lines and Castrol SRF. Same parts that can be found on a RS3 LMS TCR - racingcar.
Castrol SRF is the motorport oil with the highest boiling point level.
So hardware is no fault for the accident.
Oil boiled at no warning and at 260kph, when i need to brake, the brake pedal just went down without any pressure felt.
This standard parameter from Audi not allowing to fully disable traction/stability aids, even after long press ESC button, it only puts unnecessary extra stress on the brakes when you try to take most from the sportiest A3 at the track. Being a RS model, this is just a stupid factory parameter and very, very dangerous.
Can you help me and others in the same situation to changing that ESC setting and finally be able to enjoy the car?
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Post by dv52 (Australia) on Aug 17, 2024 22:52:43 GMT
tiago : Hi. Hmm.....without making any judgement - clearly this car is used in extreme conditions if you managed to exceed the temperature rating of the oil in the braking system !!! I guess it's possible to exceed the oil specifications "after 2 hotlaps" if the car is used "at the track" - but the lap-times must have relied very, very heavily on the brakes!
So, it's not clear from your words what exactly was replaced with the €10k repairs, but I suspect that the Brake module itself was almost certainly changed. If I'm correct, the long-code string on the 03 module would have been changed - this is where the software instructions reside that tells the module how to decode the switch positions for the ESC/ASR button.
I'm guessing of course, but this is likely the reason why this car has lost the functionality that the car previously had before the "oil-boiling" incidence. Assuming that the new Brake module was replaced like-for-like -why not simply re-code the long-code string in the same way as was done for the original brake module?
Don
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tiago
New Member
Posts: 2
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Post by tiago on Aug 19, 2024 13:14:00 GMT
Hi
The €10k repair was a result from brake failure on the longest straight at track @260kph - bumper, hood, front wings, headlights, radiators, dashboard, airbags...
Before that, car was intact like it came from factory. I'm the first owner, waited 6 months for its build, so i can assure that brake module or codings is oem factory from day one.
If brakes is applied during brake zone by driver and during cornering via ESC, oil boiling is expected in such short period. This also happened before in mountain driving at high pace but i thought it was related with bad bleeding. Did proper racing procedures and few weeks later went to track confident that LMS motorsport brake kit would handle quite good for a few laps.
I not novice with track environment and made some races with cars with ABS, without ABS and manual brake balance, +500hp rwd... so i know pretty well how to deal with brakes on track.
Just went with OBD11 product to turn off this Audi nannies and rely only in my experience and not in some shitty software parameters that kills the brakes.
Even at long coding option inside 03 module, i cannot find 29 bit that i read that can be done in some other VAG cars to change its parameters, since car shows only 26 bit code at 03 module.
I even read that at Audi track experience programs they remove a fuse to kill the ESC intervention. Can you help me with that?
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Post by dv52 (Australia) on Aug 19, 2024 20:55:02 GMT
tiago : hmm......... I'm don't suggest that fuses be removed to solve this problem because I don't know what other impact will happen!! Using this approach assumes that the separate fuses to the Brake module supply power to just ONE brake function - I'm not sure that this is correct! I'm also confused about what version brake module is installed in this car. You say that this "car shows only 26 bit code" - I suspect that you are talking about "Bytes", not Bits and I'm not sure if you mean that the module has a total of 26 Bytes, or 27 Bytes (because the first Byte is Byte 00)?
In any event, it's unclear whether this car has the usual MK100 series brake module - maybe post-up details about this module INCLUDING the long-code string
Don
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