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Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.
Hey how are you
The flashing 4hi Y traction is telling that there is a Fault in the system, To find that out you need afactory scaner or equivalent to read the necessary module and retrieve fault codes so e can look up the trouble shoot, if this is teh first time ths happened and it was a glitch we can try to Manually reset it ,lets do that & go from there
make sure we have good 12 volt battery first
Master reset Procedure
1- Disconect Battery Cables ( Negative & Positive Cables )you can use any electrical wire as an extension if battery cables don't reach .
2- Hold cables Together for 60 secs ,then let go
3- Wait 15 minutes
4- Make sure all doors are closed
5- Reconnect battery Cables
6- Lock & unlock the vehicles using the key from driver door side (if you have a key fob with no blade key, just lock & unlock using the key fob buttons)7- Enter the vehicle and attempt to start
Please let me know
ASE Certified Technician
you are very welcome