My 2004 Land Rover heat is not working? What could be the issue?

SOURCE: S Light came on dash board

S light is your Sport Shift mode light indicator.. Press the Mode Button below your shifter, and it will go out and put you back in normal shift mode

SOURCE: 2004 land rover discovery, ignition

it sounds like your starter motor is faulty. first make sure the battery is fully charged, then place a screwdriver between the contacts of the solenoid on the starter motor, if it again just clicks, then you need to repair or replace the starter motor.
hope this helps

SOURCE: how to program a keyless entry for land rover

MOST OF THE TIME WHEN YOU HAVE PROBLEMS IN THE REMOTE AND KEYLESS ENTRY.THE DEALERSHIP HAS TO REPROGRAM IT.BUT FIRST CHECK ALL THE FUSES AND RELAYS.IF THEY ARE OKAY.THEN DEALERSHIP HAS TO FIX.

Testimonial: "very good feedback."

SOURCE: 2002 Land Rover Freelander radiator and air fan not working

there is a module mounted on the fan shroud that is a common problem. but as always, check fuses, connectors and grounds!

SOURCE: NAS 2004 Land Rover Discovery Door locking problem.

this is actually the internal DC motor which comes inside the door latch. Land Rover doesn't sell it separately. You need to buy the whole door latch to have this problem sorted out. or else you can buy the DC motor from me as I made a special order from a factory for those DC motors as they are common fault in most of new Land rover generation. each motor costs you $30 +shipping Regards..