Hello,
Rear Parking Sensor can well easily be installed
The Better Quality one with 4 Sensor will cost in approx Rs 5000 - 5500. For more details - refer in
Hyundai Accessories
W.r.t Push Button Ignition - To the best of our info its not recommended as a dealer level fitment Hyundai and they dont do same
Adding a Push Button Ignition requires access to :- Connector, Wiring , Ignition Circuit, Steering Wheel Lock and many other electrical components.
A Manufacturer Warranty terms States clearly that warranty will be void:-
- Parts have been fitted to the sale item, the use of which was not approved by Manufacturer
- Damage or malfunctions due to Wiring been cut / tampered / modified
Considering the complexity involved - it might not be performed as a dealer level fitment.