Gm Remote start does not work. The keyless entry lock and unlock work, but not the remote start. How do I fix this? After locking and hitting the arrow on the top, it's horn goes off.

SOURCE: keyless entry remote

Check inside the remote case...there's instructions printed that tell you to hold the lock and unlock buttons for 7 seconds to reset the remote. I'm in the middle of replacing batteries myself. Let me know if it works.

SOURCE: keyless entry won't work

I have a 1999 BMW E46 I have had a problem with the keyless entry myself. I brought the car to BMW Dealer and they told me that my Lock had an issue and that they need to repair some wiring wich would cost me $1,023.98 to find out that it was a fuse that burned out. I have replaced the 5 amp fuse with another one but it burned the fuse again so I put a 10 amp fuse and i have not had a problems since. In my car is fuse # 54 if Im not mistaken. But waht you can do is open the fuse box which is located in your glove compartment look for a diagram that shows you which fuse is where it will give you a fuse name a number where the fuse is located and how many amps fuse it is.

SOURCE: '03 Hyundai Elantra - Keyless entry remote not working

It wouldn't be the car battery, but since you just purchased the car, the dealership should correct the problem. Bring it to their attention right away. Did you get any kind of warranty? Most dealers have at least a 30 day warranty for things like this.

SOURCE: VW Jetta keyless entry remote not working

newer remotes just pull apart, no screws

first detached the half with the pivoting key
just pull that half away from the other half

on the half without the key attach
it splits apart to expose the battery (usually a 2032 watch battery)
you may need a small flat head screw driver to help to split it apart

SOURCE: 2008 chevy malibu. how to program keyless entry remote

You must take it to the Chevy dealer.

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