About Vehicle Keys
Since 1995 all-new vehicles – cars, vans and motorbikes – have had an encoded transponder chip embedded within the key as an added security measure. These chips communicate with the immobiliser and allow the engine to start.
West End Keys Can Supply Two Basic Types of Vehicle Key:
Sometimes it’s just a new battery you need, and we can fit this for you too.
How Does a Transponder Work?
‘Transponder’ is short for transmitter and responder. Invented around 1944, a transponder is a tiny electronic chip with what is called ‘nonvolatile memory’ – meaning it doesn’t need a constant energy source to retain its data.
When a key containing a transponder is turned in the ignition the induction coil around the ignition lock sends out an electromagnetic field of energy. The transponder chip absorbs this energy and powers it to transmit a signal. This signal is the identification code of the chip. The induction coil reads the signal and sends it to the vehicle’s computer device. If the computer recognises the signal as already being stored in its memory, it accepts it and allows the vehicle to start.