[oldskool]

you can get a 2nd hand key off ebay and program it to your car very easily to at least test if the range etc works better then you would know if yours has gone duff ,, or just reprogram yours anyway via the keypad - i paid £5 for a secondhand key off ebay iirc

eventually as my car came with no spare and i wasnt going to pay subaru extortionate prices for a key i cut the blade off the programmed 2nd hand key and used it as a remote blipper to go with a key with programmed transponder i sourced locally from a key place for £45 - so the key did the immob and ignition and the fob worked the alarm and remote cl