It's The Rolls Royce Dawn Key Case Study You'll Never Forget How to Fix rolls royce key fob can elicit the kind of uncontrollable sigh that the Rolls-Royce Dawn can. Even with the cloth roof down, it's stunning.

It comes with all the usual devices, including motorised doors that can be shut by pressing one button. Umbrellas are hidden in the openings of the doors. It also has a silky smooth V12 engine that is driven in near silence.

Dead Coin Battery


A dead battery for a coin is the most common reason of a key fob not locking or unlocking the doors. It is also the simplest to fix since it can be replaced in several minutes. To avoid getting a faulty coin battery, make sure you use a new battery with the same voltage, size and specifications as the original one. Also, do not use a battery that has been exposed to clean water (rain or clean tap water, or soda) as this may cause damage to the internal chip. If the key fob isn't working, try reprogramming the key with an original key, or visit an authorized dealer.

Water damage, Receiver Module issues, Signal Interference and a defective electronic chip are a few other reasons for why the key fob might not function.

Contact with the Battery is Poor

The button cell battery inside the key fob of your Rolls Royce Dawn can lose its charge and stop functioning. Replacing the battery is a fast and easy fix. Make sure you replace the battery with one of the same size and voltage. Talk to an employee at the auto parts store if aren't sure what type of battery to buy.

Corrosion of the battery's terminals in a Rolls Royce Dawn can also hinder the battery from beginning. This issue is seen in older batteries, especially if they haven’t been charged for a long amount of time. To check if your battery terminals are corrosion free, you can use a multimeter to check the conductivity. Set the meter at ohms and connect one probe to the negative terminal on your Dawn. Then, touch the other probe to a plain metal part of the chassis or engine. The reading should be near zero ohms.

A click is another indicator of weak Dawn battery. This is because the starter solenoid as well as other components require high electric current, while the engine requires low current to operate. This means that the battery will not be able to supply enough charge.

Water Damage

Water damage could be a result of dropping your Rolls Royce Dawn Key Fob in the sink, or leave it in the rain. The chip's electronic components are protected by rubber sealings but prolonged exposure to clean water or salty ocean water may cause it to stop working.

Moisture can cause corrosion over time, leading to malfunctioning circuits that can cause issues with the ignition and security system of your vehicle. It also can interfere with signal transmission, which can cause the remote keyless system to fail. The key fob may lock your car or activate the immobiliser, leaving you stranded.

To prevent this from occurring, take off the key fob and wipe it with a damp cloth to dry out any remaining moisture. You can also put the key in a bag that is airtight with uncooked rice or silica gel packets to help to absorb any moisture that remains. After the key has dried it should function normally again. If the key doesn't work, it is likely that the 12 volt batteries or the receiver modules are responsible for the problem. They must be reprogrammed.

Receiver Module Issues

If you've tried a new battery and the remote key fob doesn't work, it may be time to replace the receiver module. The receiver module receives radio frequency signals from your key fob and converts them to commands for the car's electronic system. If the chip inside the module is damaged, it won't be capable of communicating with other modules in the vehicle. To diagnose the problem you'll require an OBD scanner to determine what the on-board computer is telling it to do.

The clips made of metal that hold the battery in the key fob that you use for your Dawn complete the circuit and hold it in the right place. The clips may corrode and make the battery's contacts ineffective. When replacing the battery, ensure that it's the exact same size and voltage as the original. It could damage the chip in the key fob.

Water damage may be the reason behind the key fob suddenly stopped working. This can happen when the key fob is dropped into water or soaked with soapy water. It is possible to clean the key fob using electronic cleaners or isopropyl alcohol but you will have to replace the chip if it's damaged.

Signal Interference

Occasionally, your Dawn key fob may cease to function due to signal interference. Interference could be caused by objects that are within the vicinity of your vehicle or by weather conditions, or transmitters that operate on the same frequency band. A malfunctioning receiver module could also cause interference. If you're unable to solve your issue by reducing the amount of interference, you can try using an amplifier or range extender.

If the battery for the button cell is completely drained then it's time to replace it. The battery should have the same voltage, size and type as the original battery in order to ensure that your vehicle remains compatible with the key fob. If your key fob begins to malfunction intermittently, it could indicate the chip is fried.

If you've tried all of the above, but your key doesn't seem to be unlocking or lock, then it's time for a locksmith. A reputable locksmith can assist you with all of your Rolls Royce key fob and key programming requirements. This includes reprogramming and replacement. They'll be able to provide you with a price estimate for the work that is needed. Make sure you ask the locksmith about their fees and credentials before hiring them.

Dead 12 Volt Battery

The 12 volt battery that is in your Rolls Royce Dawn is responsible to provide high electric current not only for starting the engine but also to provide power to all accessories and on-board computers. The battery won't work if it is dead or if the flow of electricity is interrupted due to corrosion of the battery's terminals or the ground connection.

You can use a multimeter to check the conductivity of your Dawn battery. To perform this test remove the negative cable from the battery, and then connect one probe of the multimeter to the ground wire of the battery and the other probe to any exposed metal component of the vehicle's engine, body or chassis. The reading should be near zero in ohms.

If the results are not satisfactory you can replace the battery with an alternative battery that has the same size, voltage and specification. Be sure to fully charge the new battery before using it. The most frequent cause of a faulty battery is internal degeneration due to age. However, it can be caused by the draw of a parasite or if your car has been parked for a long time.