Changing the battery in your key fob isn’t something you want to do accidentally, so take the time to learn how to do it correctly. This will ensure your key fob stays in working condition.
Checking the battery
Whether you are in the market for a new VW Atlas key fob battery or you just want to check the battery in your existing one, there are a few simple steps to follow to get the job done. A faulty battery can be dangerous to your vehicle. If the battery light stays on, it may be time to get a replacement.
The most common cause of the red battery light in an Atlas is a faulty alternator. A bad alternator will not charge the battery enough to start the engine. This can cause corrosion on the battery terminals and electrical connectors. Typically, an alternator can last for tens of thousands of miles, but it is a good idea to check it at each service visit.
To check the battery in a VW Atlas, the first step is to turn the engine off. Next, disconnect the negative cable from the battery. Use a wire brush to remove corrosion from the terminals. Use a multimeter to check the voltage between the negative terminal and the engine. If the voltage is below 13.5 volts, the alternator is not functioning correctly.
Troubleshooting a faulty keyless system receiver
Getting a keyless system into your vehicle can be frustrating. The good news is that most modern cars come equipped with on-board diagnostics that allow you to track down the cause of your problem. If you’re lucky, you might find a mechanic in your area that can perform a keyless entry system test. The bad news is that most mechanics will charge you for it.
A keyless entry system consists of three main components. The most common one is the receiver, which is a small chip located in the passenger door. It has a variety of uses, from working the locks to opening windows. The key is to keep this little guy in working order. You might also want to consider mounting it on a small piece of wood. If you do that, be sure to add a rubber grommet to prevent it from slipping off the wood.
A keyless entry system is also equipped with a variety of relays in the driver’s door, which allow you to lock and unlock the doors with a single button. If you have a malfunctioning relay, the door will only open or lock if you’re holding the key near the switch.
Symptoms of a failing battery
Symptoms of a failing battery in a VW Atlas key fob include a clicking sound or lack of power. A dead battery can also cause a slow engine cranking. This may be due to a bad alternator or a loose connection between the battery and the engine. If you hear a clicking sound, check the voltage at the battery terminals when the engine is running.
The dashboard lights on an Atlas will blink if the battery is not properly charged. If the dashboard lights are red, it is a sign of coolant problems. This may require towing the car to a service center.
The battery can be checked with a multimeter. Set the multimeter to ohms and then touch the probe to the battery’s negative terminal. The reading should be close to zero ohms. If the reading is more than 12.3 volts, you may need to change the battery.
You can also test the key fob for functionality. You should be able to use the key to unlock and disable the immobilizer. If the key is unable to unlock the car, you may need to replace the battery. You can buy a new key fob at an auto parts store.
Getting a replacement key fob
Getting a replacement key fob for a VW Atlas can be a difficult task. There are several different types of keys for the Atlas, including transponder, intelligent and regular. Each type requires a different key code. If you need a replacement key for your Atlas, check your VIN to find the right code.
The most common cause of a key fob not working is a dead coin battery. If you’re unable to find the right key for your car, contact your local dealership or automotive locksmith. A locksmith can match your key fob to the cylinder.
Another common cause of a key fob not functioning is an internal chip that is damaged. To fix this, clean the chip with isopropyl alcohol and let it dry. If this doesn’t help, you may need to replace the internal chip.
Another cause of a key fob not working can be water damage. If you’ve been washing your car in the sink, the soapy water can damage the contacts.