S300 v3 non EPA issues
Posted: Tue Jul 15, 2025 2:57 pm
Hello Hondata Team,
I have a Hondata s300 that has been unresponsive and any calibration cannot be uploaded. It was last used way back in 2018.
Symptoms are:
1. Upon plugging it in without the ecu D4 lights up and does not turn off.
2. Red light (D4) keeps blinking.
3. Upon plugging in the USB cable, the D3 LED lights up for 2 seconds then turns off.
4. SManager does not upload and can only download calibration from the s300. Upload is greyed out from Smanager and can only click on the blue information button, open a calib file, set bluetooth options, password, and edit the registered owner.
5. Smanager reads the data under s300 information and was able to detect the
information below:
Version: 3
Status: Normal
Processor: NXP
Status: Normal
RAM Test: Passed
Datalogging memory test: Passed
Flash Memory: 32MB
Serial No: 49741
Bluetooth: Passed
EPA/CARB: No
Firmware version: 24
Firmware OK: Yes
Software version: 2.7.3
Registered: Yes
Security Password: Yes
Upload Security Password: Yes
6. All symptoms are the same even if the s300 is installed in the ecu. Tried with other hondata s300 and it works fine with the ecu so the ecu is good.
7. Onboard datalogging is also disabled.
8. Tried two different ECUs that are running good with a different hondata s300 v3 and switched with 3 laptops and it is still behaving the same.
I have a Hondata s300 that has been unresponsive and any calibration cannot be uploaded. It was last used way back in 2018.
Symptoms are:
1. Upon plugging it in without the ecu D4 lights up and does not turn off.
2. Red light (D4) keeps blinking.
3. Upon plugging in the USB cable, the D3 LED lights up for 2 seconds then turns off.
4. SManager does not upload and can only download calibration from the s300. Upload is greyed out from Smanager and can only click on the blue information button, open a calib file, set bluetooth options, password, and edit the registered owner.
5. Smanager reads the data under s300 information and was able to detect the
information below:
Version: 3
Status: Normal
Processor: NXP
Status: Normal
RAM Test: Passed
Datalogging memory test: Passed
Flash Memory: 32MB
Serial No: 49741
Bluetooth: Passed
EPA/CARB: No
Firmware version: 24
Firmware OK: Yes
Software version: 2.7.3
Registered: Yes
Security Password: Yes
Upload Security Password: Yes
6. All symptoms are the same even if the s300 is installed in the ecu. Tried with other hondata s300 and it works fine with the ecu so the ecu is good.
7. Onboard datalogging is also disabled.
8. Tried two different ECUs that are running good with a different hondata s300 v3 and switched with 3 laptops and it is still behaving the same.