You have to keep your address up to date in the DMV. It is not enough to inform the US Postal Service.
I'd like to know if I will receive a Notice of suspension of Registration if I don't pay tolls?
The notice will inform you that if you pay all tolls, fees, or other charges due to the toll authority, or if you dismiss or transfer them, the suspension will not take effect.
How can I respond to a toll authority for non-payment of tolls?