Whenever you have to replace a key fob, you need to be sure that you are getting a high-quality replacement. If you buy a cheap replacement, chances are that you won’t be able to make the key work. Also, the battery might not last as long as it could. You should also make sure that you get a replacement that has the same frequency as the original.
Reprogramming your key fob
Whether you are having trouble starting your VW Atlas or simply need to reprogram the key fob, there are several ways to do it. The keyless entry system is a remote system that allows you to unlock and lock your doors. The computer inside the car recognizes a chip that is inside the key fob. This chip is different for each car model.
First, you must get a new battery. You can purchase these at Home Depot, AutoZone, or Walmart. You should replace the battery every two years or so. The key fob battery may be damaged or simply not working. If this is the case, you should reprogram the key to work with the new battery.
Another common cause of an inoperative key fob is a dead coin battery. This is easy to identify and fix.
Objects or poor weather can disrupt the frequency band
Changing the VW Atlas key fob battery is a bit like reprogramming the radio. For starters, the receiver module is located under the dash. You may have to make a trip to your local authorized dealer for this if your car was manufactured in the last few years.
Similarly, you may not be able to use the remote keyless entry system if the 12 volt battery is dead. A dead battery will also render your accessories inoperable. If you are fortunate enough to have a spare key on hand, you may be able to lock and unlock your vehicle without having to use the ignition.
In short, the most important part of the puzzle is the battery. You need to make sure it’s in the correct orientation, and that it is a battery of the right size and voltage.
Transponder chip keys or smart key fobs need to be programmed
Using a transponder chip key or a smart key fob is an anti-theft security measure. These keys are designed to emit radio frequency identification, or RFID, which unlocks the car’s locks and starts the ignition. However, these keys do need to be programmed to work.
Programming a transponder chip key or smart key fob can be done on your own or at a dealership. The cost to program a chip key depends on the model of vehicle and the software and hardware required. Most dealerships will have a special machine to program a transponder chip key.
Programming a smart key fob can cost anywhere from $50 to $400. This includes programming the key, a replacement key, and mechanical backup keys. A smart key fob is designed to have additional functionality, such as push-button remote control.
Cleaning the terminals and posts
Whether you need to replace a key fob battery or are looking for a replacement for a vehicle battery, cleaning the terminals and posts is essential. A weak battery can cause lights to flicker, accessories to malfunction, and the starter to slow down. Fortunately, there are two steps you can take to clean the terminals and posts before replacing your battery.
The first step is to remove the plastic caps on the battery posts. Then, cover the posts with a thin layer of grease. Finally, place anti-corrosion washers on the posts to prevent corrosion. If you don’t want to replace the battery, you can also clean the terminals and posts with a wire brush.
When you are ready to replace the battery, make sure to connect the cable to the positive terminal and the positive post. You can disconnect the cable from the negative terminal with a wrench.
Fault diagnosis to diagnose a faulty remote keyless system receiver
Fortunately, most modern vehicles are equipped with onboard diagnostics that allow you to pinpoint the cause of a malfunction. In some cases, a faulty remote keyless system receiver module can be a simple fix. You can pull the module apart and inspect the circuit board, or you can bring in a professional to do the job for you. For instance, you can use a radio frequency tester to determine if your keyless entry is sending a signal when the button is pressed.
Another useful tool is an OBDII scan tool, which will allow you to determine if your security module is receiving the proper commands. In some cases, the module will fail altogether, but in others, a simple replacement will be all that’s needed.