On early build vehicles, the universal transmitter can be identified by the Homelink® symbol and one red indicator light.
On late build vehicles, the universal transmitter uses the Lear Car2U® System. It is identified by the lack of a symbol, but with 3 red indicator lights. Each of the 3 buttons has a red indicator light located behind the 3 buttons.
The universal transmitter is an integral part of the LH sun visor and provides a convenient way to substitute up to 3 hand-held transmitters with a single built-in device. The universal transmitter can learn the radio frequency codes of most current transmitters. The universal transmitter:
Homelink
Universal Transmitter Programming - General ProceduresFord Focus Transaxle Description
The 4F27E is a fully automatic, electronically controlled 4-speed transaxle designed
for Front Wheel Drive (FWD) vehicles.
Its abbreviated designation 4F27E means:
4 — 4-speed transmission
F — FWD
27 — originally designed for maximum input torque after torque converter:
365 N ...
Nissan Frontier - Instrument Panel - Keys - Brake system