How to Fix Rolls Royce Dawn Key Fob Problems

There are very few automobiles that can generate the kind of involuntary gasp that the Rolls-Royce Dawn does. Even with the top-down cloth it's a stunning vehicle.

It has all the hallmark features - such as motorised doors that can close at the press of a button as well as umbrellas hidden in the door opening. It has a smooth V12 engine which can be driven in almost silence.

Dead Coin Battery

A dead coin battery is the most common cause of a key fob not locking or unlocking the doors. It is also the easiest to fix since it can be replaced in only a few moments. You should use a brand new coin battery that has the same size, voltage, and specification as the original to avoid a faulty battery. Also, never use batteries that have been exposed to clean water (rain or clean tap water or even soda) since this can harm the internal chip. If the key fob still does not work, try reprogramming the key using an original key or visit an authorized dealer.

Other reasons that the key of rolls royce fob may not be working are water damage, receiver Module issues, Signal Interference and an Electronic Chip that is damaged.

Contact with the Battery is Poor

The button cell battery in the key fob of your Rolls Royce Dawn can lose its charge and cease to function. Replacing the battery is a fast and easy fix. Be sure you replace it with a new battery with the same size and voltage. Contact the auto parts store if are not sure which type to buy.

Corrosion of the battery's terminals in the battery terminals in a Rolls Royce Dawn can also hinder the battery from beginning. This is a problem that is seen in older batteries, particularly when they haven't been charged for a long amount of time. A multimeter can be used for assessing the conductivity of your battery to determine if the battery terminals have corrosion. Set the meter to Ohms, and place one probe against the negative terminal of your Dawn. Touch the other probe on the surface of the chassis or engine. The reading should be near zero ohms.

Another symptom of a weak battery in your Dawn is a clicking sound when you attempt to start the engine. This is due to the accessories, the starter solenoid and the engine require low voltage while the starter solenoid requires high current.

Water Damage

Water damage is likely to occur if you accidentally drop your Rolls Royce Dawn Key Fob in the sink or leave it in the rain. The electronic chip is protected by rubber seals but prolonged exposure to clean water or salty ocean water may cause it to stop functioning.

Over time the moisture in the air can cause corrosion, resulting in malfunctioning circuitry that could lead to issues with the car's security and ignition systems. It could also affect the transmission of signals, leading to the malfunction of remote keyless systems. The key fob could lock your car, or activate the immobiliser, leaving you stranded.

To avoid this, remove the key fob from its case and wipe it with the help of a damp towel to get rid of any moisture. You can also place the key in an airtight container with uncooked rice or silica gel packets to help absorb any residual moisture. After drying, the key should work normally again. If the key fails to work, it is most likely that the 12 volt batteries or the receiver modules are at fault. These need to be reprogrammed.

Issues with the Receiver Module

If you've tried a different cell but the remote key fob does not function, then it may be time to replace your receiver module. This is the part that receives radio frequency signals from the key fob, and converts them into commands for the car's electronic. If the chip inside the module is damaged, the module will not be able communicate with the other modules of the vehicle. You'll need a scanner to identify the issue. It will show you what the computer in the vehicle is telling it.

The metal clips that secure the battery in the key fob of your Dawn complete the circuit and hold it in position. The clips may corrode and make the battery contacts useless. When replacing the battery, ensure that it is the exact same size and voltage as the original. It could cause damage to the chip inside the key fob.

If the key fob stopped suddenly, it could be an indication that it has been damaged by water. This can happen when the key fob is dropped into water or gets wet with soapy water. You can clean the key fob using electronic cleaners or isopropyl alcohol however, you will need to replace the chip if it's damaged.

Signal Interference

Sometimes, your Dawn key fob may not function due to signal interference. Interference could be caused by objects that are within the vicinity of your car or by weather conditions, or transmitters on the same frequency band. A defective receiver module can also cause interference. If you are unable to resolve your problem by decreasing the amount of interference, try using an amplifier or range extender.

It is crucial to replace the button cell battery on your Dawn key fob if it's depleted. The battery should have the same voltage, size and type as the original battery to ensure that your vehicle remains compatible with the key fob. If your key fob ceases to work intermittently, it may indicate that the chip has gone out of service.

If you've tried everything above but your key is still unable to unlock or lock, it's time to contact a locksmith. A reliable locksmith will be able help you with any Rolls Royce key fob or key programming needs, such as the reprogramming and replacement. They can give you an estimate for the work needed. Be sure to ask the locksmith about their rates and credentials before hiring them.

Dead 12 Volt Battery

The 12 volt battery in your Rolls Royce Dawn provides high current to start the engine, but also for all onboard computers and accessories. If this battery is in a dead state or the flow of current to the engine is disrupted because of corrosion on the battery's terminals or ground connection, all electronic components on board including the remote keyless system will stop working.

You can use a multimeter to test the conductivity of your Dawn battery. To do this, remove the negative cable from the battery and connect one probe of the Multimeter to the grounding wire of the battery. Then, touch the other probe of the Multimeter to any exposed metal components of your vehicle, such as the chassis, body, or engine. The reading should be in the vicinity of zero Ohms.

If the results were not satisfactory, replace the battery by another battery with the same size, voltage and specification. Make sure you fully charge the replacement battery prior to using it. The most common cause of the battery failing is internal degradation caused by the effects of aging but it can be caused by an excessive draw or if your vehicle has been left for a long time.