Good news. Somehow the messages came up and also text to speech is working. It worked after i did this.
1)Driving and using bluetooth as usual. ( ensure that pairing is done)
2) toggle iphone 5, show notifications and ensure that it is done by going back to the main screen systematically by clicking back, back, back.
3) Disable bluetooth on phone.
4) enable bluetooth on phone again.
5) click show notification.
6) back up all the way systematically back to main screen on phone to ensure option entered.
7) Car at this time ( while still active) would not see the bluetooth working, manually paired/discover the iphone back using idrive.
8) ask someone beside you to send you an sms. it should appear.
It did it for me.
Have not tried the emails functions yet. =)