Why Your Rolls Royce Remote Key Isn't Working
If you're Rolls Royce Phantom remote key isn't functioning, it could be due to one of the following problems. It could be due to a dead battery in the coin-cell, water damage, or a faulty microchip that needs to reprogrammed.
These keys need to be stored in a safe manner and not exposed to wet areas or electrical impulses. If you have done this and it isn't working, try the following steps:

Diagnostics of a fault
Rolls Royce has a reputation as a well-established modern, sophisticated brand of automobiles that is dedicated to excellence. It is therefore crucial to ensure regular maintenance, to avoid major problems in the future that could be costly and time-consuming to repair. One of the most crucial maintenance tasks is to read and clearing fault codes. Fault codes are tiny SOS messages sent by your vehicle's complex electronic system. It's like ignoring a persistent cold - they could be a sign of a larger underlying problem.
There are many possible reasons your key fob might stop working. It could be due to an inoperative coin-cell battery or water damage, interference in the signal, receiver module problems or a damaged chip. If you've tried everything, from replacing the battery to reprogramming, and the problem persists, it's a good idea to bring your Rolls Royce in to a expert to help you resolve the issue.
When a key fob stops functioning the first thing to look into is the battery. The most common cause of a key fob not working is a battery that has been drained. It is essential to replace the battery with a button battery of the same voltage, size and specifications as the original. It is recommended that the key fob is kept in a safe location, away from objects like coins or keys that could cause mechanical damage.
After replacing the battery, make sure that all metal retaining clip remain in place and do not cause any contact issues. Also, ensure that the battery is not dirty or corroded. If the battery isn't genuine replacement for the Rolls-Royce, it could be damaged by defective components and may cause the receiver module to malfunction, or even lock the doors.
Faulty Receiver Module
If the key fob has stopped working one day and you've tried everything (replaced coin battery, reprogrammed the key, even a spare) this could be a sign of that there is a problem with the receiver module that is responsible for decoding and receiving the remote control signals. This is particularly relevant if you are able to use the key fob in another vehicle and it works.
The receivers inside the key fobs are made of metal retaining clips which hold the battery in place and complete the circuit when the buttons are pressed. If these are damaged or bent, it could prevent the key fob from receiving the right signal to unlock or lock the vehicle. The receiver module could also stop working due an incompatible chip.
Faulty key fob
If your key fob isn't working, it could be due to a variety of causes. Often, the first problem is a dead coin battery, which can be easily replaced in minutes. The key fob can also malfunction due to water damage, receiver module issues or signal interference. You can check for these issues by disassembling your key fob and applying isopropyl alcohol or electronic cleaner to the chip inside.
rolls royce cullinan keys could be worn buttons. Remote controls for car keys are equipped with rubber buttons that may wear out or become loose over time. This causes a loss of pressure between the button and the designated pressure point, causing it not to function properly. This is a simple fix for the majority of key fobs that can be accomplished at home by disassembling the key by removing the buttons and cleaning them. Soldering them back into place can bring them back to working order.
Other causes for the malfunctioning keyfob could be batteries that are dead at 12 volts, keys that are not paired and need to be programmed again, or a malfunctioning chip. A chip that is defective will stop the key fob from sending signals to the vehicle's receiver module. The key fob will start your Rolls Royce's engine when it receives an acceptable signal from the chip.
Sometimes, a button start key could be compromised by thieves who are technologically adept. They can employ artificial intelligent to pick up on the unique signal sent from the key fob and unlock or activate the ignition of your car. This kind of hacking is becoming less prevalent due to security measures that have been improved over the years.
If you've lost your Rolls Royce remote key, you can always contact a professional locksmith to make duplicate copies. A professional locksmith is familiar with all models of cars, including those that have complex central lock systems. This means that they can make a copy of your key fob without damaging the original. They also can provide an alternative to purchasing the replacement from the dealer. Autolocks LTD is a well-known business in the South East England that can offer excellent service for all Rolls Royce models.