Hello,

I recently purchased a 5F Leon ST MY 2020. Is there a reliable way to disable engine start&stop permanently with OBD11 by long coding? The one click app to perform this in OBD11 was only for MY 2018 or 2019 and older.

Thank you,

habba
 
Think you might find you need to change the switch or harness. Videos online. The voltage method was the one to use previously. You'd make a note of what it was, then change it to 12v. Then revert it back for service so the dealer didnt have guinea pigs. Post 2020 moving on the mqb evo platform, vag scuppered that. A query of what platform its on will reveal. Then its fiddling with the switch or cable.

Quick look down


Evo.

See what they say on the Golf 8.
 
Right, thanks. In fact my car is of the first generation MQB platform. The official MY is 2020, but the car itself is really the last MK3 Leon, so still the older generation. But I have understood by searching different forums, that the voltage method would not work for the last facelift versions of the MK3 (5F) Leon?

Another modification I did to my previous 2016 Skoda Superb was a keyless entry modification, that allowed me to keep the engine running and I was able to lock the doors from the keyfob from outside. I found this quite useful especially in wintertime, if you had a quick turn at the grocery etc. Is this something that would be possible for the Leon?
 
Certainly on the MQB Platform and even the evo one you can buy a simple memory switch cable that recalls the last setting the switch was set to so you can have it off all the time but revert it if you ever need to.

I have it done on my 2014 model but cant see if coding works on facelift motors I am afraid.
 
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With the Index AC by the Gateway, No more Manipulation in the Gateway worked forrecr
 
Answering to myself if this would help someone in the future. To be able to lock the doors when engine is running: 09 Central electrics, adaptation, ZV allgemein, funk bei klemme 15, set as activate. Use security access 31347. I also found one hint for disabling the S&S just with coding, but haven’t been able to test this yet. I will give feedback then I’ve tested if it works or not.
 
I would agree with the above. The voltage method does not work anymore with my car, as it is one of the last 5F’s (MY2020).
 
You might be stuck then. Vag was after closing that door. I dont think its been sorted for Leon 4s and Formentors. Merit of an EV no SS. I dont expect to be able to change much when I do change my car and all the systems are going to be changed in anycase with that platform they are working on.
 
This is the OBDeleven forum post I found and tried:


Should work for my car also. Let’s see, I did the adaptation today. It’s winter now in Finland, so S&S is not working not very often in any case.
Some they fit with a switch / cable to replace the function of the switch. Dv52 produced the circuit diagram that manufacturers nicked in China I guess. Non coding approach to faking the behaviour of the switch.

The AC method has the effect that it's telling the car its really got to keep the engine running due to the high drain on the battery so SS wont work. Its a faking method. Some people just slam the AC on full blast to get the same result.

You find all of that if you Google Dv52 / Don on Australia boards. He's the coding Guru that thought that SS was just plain dangerous.

The working up to the circuit diagram is here


& the rest of the thread.

My next car will be an EV so I'm washing my hands of SS :ROFLMAO: .
 
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