This guide will help you install a Stellar BMW45P keyless entry system for a 3 Series BMW. The model of this keyless entry system is the AutoLoc KL550. Kits like these are custom wired to work with BMW so you just have to plug them in and program them. They are sold from a few sites online such as Bavauto, Pelican Parts, and The Hoffman Group. The system sells for about $150.
First thing you should know is that installation of this lock system is not very easy. Yes it is technically plug and play, but getting to that point involves taking out the glove compartment of the car. You will need the right tools, some patience, and a couple hours to install this keyless entry system.
Tools you will need:
- Phillips head and flat head screwdrivers (preferably ones that are short)
- A 10mm socket wrench with an extension that is about 4 inches
Taking out the screws:
There are 8 screws you will need to take out. 2 are in the vents above the glove compartment. Unscrew these. Next, open the glove compartment. There are 4 screws to take out here. 2 are likely hidden by a couple of plastic covers. The other 2 are towards the bottom. The final 2 screws are underneath the glove compartment.
Taking out the vents:
Now that the screws are out, you should be able to pull out the dash piece at the top that has the vents. It's not very easy to get out. You might have to pry it a bit with a screwdriver. It does have some latches holding it in, so if you lift it up, it might come out easier. Just keep at it until it comes out. Some levers that adjust the vents might get knocked off while you are removing this piece. If so, make sure to take these out too and snap them back into place once the vent is out.
Taking out the 10mm bolt:
In the glove compartment, there is a light on the top. You can pry this out with a flat head screwdriver. Pull the light down so you can access the bolt that is above it inside. Use your 10mm socket wrench to remove this bolt.
Taking out the glove compartment:
If you have removed 8 screws and 1 bolt, you should now be able to pull out the whole glove compartment section. You should be able to do this rather easily. You don't need to unhook any wires. Pull it out and place it on the floor mat below. Now you should be able to see all the wires and things inside.
Preparing the Stellar Autoloc system:
There is one set of wires you need to plug into the main lock box. Plug in the white end to the box. The other end (black) will plug into the car. You also need to plug in the valet button wire and the LED wire into the main box. These help you program it.
Plugging it into the car:
Inside, it will look like a lot of wires and it's not clear as to where to plug it in, but if you look far back, on the left side, there should be a place to plug in the black end of the wire. The shape will fit the plug exactly, but you have to make sure it is facing the right way. It is hard to plug this in because it is so far back and there is not a lot of room. You may have to hold it by the wires and try to guide it in. Then carefully use a screwdriver or something long to push the edges to make sure it is plugged in securely. Once this is in, you are ready to program the lock.
Programming the Stellar BMW45p:
Put the key in the ignition and turn the key to the on position. Next press and hold the red button that is plugged into the main box for 3 seconds. You will probably hear a noise and the red LED light will blink. Once it does this, press the lock button on the remote. Press the lock button on the other remote also if you have more than one. That's it. Turn the key to the off position and take out the key. Test out your remotes to make sure they work. They should now be able to lock and unlock the doors. Try to position the lock box somewhere inside where there is room and it will not move around much.
Put it all back together:
Now you can resemble the glove compartment and vents the same way you took it apart. Congratulations, you now have keyless entry on your BMW 3 series!
If you have any questions on this guide, leave them in the comments below.