airbags are lifed for 10 years
I really doubt that...
I managed to borrow a code reader but no error codes
Not good
Try disconnecting the battery for 30 mins to see if it clears a fault.
Go to someone with a version of FES or MES... they should be able to connect to your Airbag module.
You cannot get an error code because it's in a different computer than the ECU -the one regular code readers use.
If you had the battery out it's normal to have ESP/ASR/Hill holder errors... you just have to drive it a little.. and run the steering wheel from full lock right to full lock left a few times.
ask an airbag manufacturer