Hondata turning off for a second or restarting

[JuanDeLaMora]

Hi,

I have had a S300 V1 for the past 4 years, but lately some times it resets and turns off the car engine, since I have security enabled I need to perform those steps to start the car again. It happens very random, one day could give you the issue many times, or you can use the car for days not having any problem.

I have tested the S300 in others ECUs (P61 and P72) and does the same, randomly the engine stalls and you can hear the main relay releasing and engaging at the same time. I have changed the main relay also, issue is still there.

My final test was to borrow and try another S300 V1with my calibration and eureka, problem solved no issues with it, I used the car 2 weeks with no issues, commonly issue will appear within 3 days.

My tunner and I tried to upload my calibration again and LED got red and the boost solenoid started clicking, we couldn't upload my calibration, then I figured it out choosing a new calibration from the ones SManager has and upload it, then LED came green again and after that we were able to upload our calibration, very weird because I have had this S300 for long time and I haven't done any modifications to the car nor the ECU. For the S300 I borrowed it uploads the calibration without an issue.

Can you please help me? I dont have the calibration right now, my tunner has it but I dont think the problem is with it because it worked long time in my S300 and it also works perfectly in the one I borrowed.

Thanks for reading!

[Spunkster]

It sounds like the s300 is faulty. Your only option would be to upgrade to the version 3. Details on upgrading can be found at: https://www.hondata.com/downloads/s300v ... e_form.pdf

[JuanDeLaMora]

It sounds like the s300 is faulty. Your only option would be to upgrade to the version 3. Details on upgrading can be found at: https://www.hondata.com/downloads/s300v ... e_form.pdf

Hi Spunkster, thank you for your fast response.

I bought this S300 with a closed ECU to another guy, it does have the Hondata sticker cut, no serial number is there, I asked the guy who sold it to me and he told me he bought it like that, I have no further info than that, I purchased legally but unfortunately it came with the sticker cut, is there any way I can upgrade it? I'm located in México but I will fly to US next month.

Hope you can help me, thanks in advance.

[Spunkster]

If the serial number has been removed then we cannot upgrade it.