How to Change a Dead Volvo C30 Key Fob
The Volvo C30 is a good car, but it has some minor flaws. It's very comfortable and well fitted for the two front seats, however rear seats are tight and cargo space is limited.
If your Volvo key isn't turning, it could be due to a range of issues. Some keys require programming and should only be programmed by a dealer or automotive locksmith.
How to change the blade on the key
You may still be able unlock your Volvo with the mechanical blade in case your key fob is not working. Most new Volvo cars come with a hidden mechanical key that opens the driver door in the event of an emergency and keys for the remote aren't working. You can use the mechanical key even to start your Volvo as long as the sensor is in use when you enter the vehicle.

To volvo xc90 key G28CarKeys , hold the fob with its "Volvo Cars" logo upside-down. Then, locate a small black button on the bottom left corner of the key fob and slide it downwards and to the right. This will let the cover open and allow you to access the secret key blade that is inside.
The key fob is simple to replace. Slide the cover of the key fob off of the key ring. Carefully remove the back of the cover, so that you can see the inside. You will notice that the battery is a standard CR 2032 watch-style cell. Replace the old battery with a new one. Be careful not to touch either of the + or - poles of the battery with your fingers. The batteries are available in a variety of pharmacies and stores.
How do I change the battery?
The key fob comes with tiny batteries that is likely to need replacement at some point during the ownership of your vehicle. The fob also has a mechanical key blade which will allow you to open the driver door when the remote battery is dead or the keys are lost.
The battery can be changed easily, but you should be careful not to damage the electrical contacts made of metal inside the cover that covers the back of the fob. A small flathead screwdriver, or a plastic automotive pry bar tool can be used to open into the corner of the cover. After the cover is removed and the battery is removed, it can be replaced by sliding a brand new silver button cell (CR 2430 3 Volt) in to the slot with the "+" positive side facing downwards and the "-" negative side towards you.
The key blade can be fitted into the fob when the battery has been replaced. Pressing the unlock button once will deactivate the alarm and unlock the driver's door. Pressing it twice should unlock all the doors and open the tailgate if you have one fitted to your car.
Most grocery stores and pharmacies offer batteries that are replacements. These batteries are marketed as watchbatteries, and they come with an identifying number on them to aid in identifying them.
How to change the ignition Cylinder
It is vital that your Volvo is working correctly. They provide power to different components of the car and help it start. Over time, they will get worn out and need replacement. If your Volvo has trouble starting or stalls when driving, you might need to replace the ignition cylinder.
If you're lucky, it could be something you did wrong or an error made by you. It's possible that you didn't remove the key completely, or it may be stuck in the lock. You can try to release the key by moving it around and shaking it gently. Be careful not to apply too much pressure, since it could cause damage to the steering wheel or the ignition switch.
The ignition switch could also be faulty. It's not unexpected that this switch will wear out over time, as it is used on a daily basis. It's likely to fail with one of the settings that provide power to the accessories or the ignition and then stop. Stalling indicates that the ignition switch is on its way to fail completely, so it's important to get it checked out when you notice issues.
The technician will inspect the entire system in order to find out what is causing the issue. They'll inspect the ignition cylinder, the key and other components of the security system. If you're driving a brand newer vehicle, they'll examine the wiring to see if there are any problems with it.
How to Change the Remote
If your Volvo key fob battery is dying or you'd like to swap it out, there is an easy and fast method to do this. Utilize a flat screwdriver to pry the back cover off your key fob to replace the battery. A small grey button is located in the upper right corner of the key fob and you can use this to slide open and remove the cover of the battery. Then, you can remove the old battery and replace it with a new one, which should take just 30 seconds or less.
You can control the remote window roll-down feature of the latest Volvo using your Volvo keyfob. You can also shut the sunroof and windows by pressing the lock button (if it is equipped). When you hit the unlock button on the Volvo key fob for the SUV, the alarm will be disengaged and the driver's side door will be unlocked. Other doors as well as the tailgate will be locked when you press it two times in succession.
If you notice a "REMOTE BATTERY low voltage" message in the instrument cluster in your car, or the locks do not respond when you're within distance, it's time for you to replace the battery for your remote key. Replacing the remote key battery is a quick and easy procedure that can be accomplished in just a few minutes, either at home or through your local dealer.