How to Fix Rolls Royce Dawn Key Fob Problems

Few cars can create the kind of uncontrollable sigh that the Rolls-Royce Dawn can. Even with the cloth roof down, it's an impressive car.

It comes with all the standard gadgets, including motorised doors that can be closed at the push of a button. Umbrellas are concealed in the openings of the doors. It also has an ultra-smooth V12 engine that can be driven in near silence.

Dead Coin Battery

A dead battery for a coin is the most common reason of a key fob that isn't locking or unlocking the doors. It is also the simplest to fix since it can be replaced in just several minutes. To avoid a damaged coin battery, always use a new battery that has the same voltage, size and specifications as the first one. Also, never use the battery that has been exposed to clean water (rain or clean tap water or even soda) because this could cause damage to the internal chip. If the key fob won't work after reprogramming it using an original key, you can visit an authorized dealer.

Other reasons the key fob may not be functioning include: Water Damage, Receiver Module Issues, Signal Interference and a Bad Electronic Chip.

Poor Battery Contact

The button cell battery inside the key fob of your rolls royce phantom key fob Royce Dawn may lose its charge. It is easy to replace the battery. However, make sure that you only replace it with a brand new battery with the same voltage and size. If you're unsure of what type of battery to buy, you can try asking the staff at the local auto parts store.

The corrosion on the terminals of the battery in a Rolls Royce Dawn may also stop it from being able to start. This issue is common with older batteries, especially when they haven't been charged for a long period 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 at ohms and use one of its probes to connect to the negative terminal of your Dawn. The other probe should be placed on a bare metal surface of the chassis or engine. The reading should be near zero ohms.

A clicking noise is another sign of a weak Dawn battery. This is because the starter solenoid and accessories require high currents of electricity, while the engine requires low current to function. This means that the battery cannot supply enough charge.

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 sealings but prolonged exposure to clean water or salty ocean water could cause it to stop working.

Moisture can cause corrosion over time, which can lead to faulty circuitry which could cause problems with the ignition and security system in your car. It could also affect the transmission of signals, causing the remote keyless system to fail. The key fob can disable your vehicle or activate the immobiliser system, leaving you without a vehicle.

To prevent this from happening, remove the key fob from its case and wipe it with an abrasive towel to eliminate any moisture. You can also place the key in an airtight container with uncooked silica gel or rice packets to soak up any moisture. Once dry the key should function normally again. If the key fails to work, it is likely that the 12 volt batteries or the receiver modules are the cause. They must be changed.

Issues with Receiver Modules

If you've tried a new phone but the remote key fob does not function, then it may be time to replace the receiver module. This is the part that receives radio frequency signals from the key fob, and converts them into commands for your car's electronic. If the chip in the module is damaged, it won't be capable of communicating with other modules in the vehicle. To identify the issue you'll require an OBD scanner that can determine what the on-board computer is telling it to do.

The battery inside the key fob of your Dawn includes metal retaining clips that keep it in place and complete the circuit. These clips are susceptible to corroding and render the battery's contact ineffective. 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 stops suddenly, it could be an indication that it was damaged by water. This can happen when the key fob is dropped in water or is soaked by soapy water. You can clean the key fob using electronic cleaners or isopropyl alcohol but you will have to replace the chip if it is damaged.

Signal Interference

Signal interference could cause your Dawn keyfob to stop working. Interference could be caused by objects in 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 not able to cut down on interference, you may consider using a range extender or signal booster.

It is crucial to replace the button cell battery in your Dawn key fob if it's depleted. The battery must be the same size, voltage and type as the original battery to ensure that your vehicle is compatible with the key fob. If your key fob begins to malfunction intermittently, it may indicate that the chip has gone out of service.

If you've tried the previous methods but are still unable to get your key to open or lock, it's likely time to call a professional locksmith. A reputable locksmith will assist you with all your Rolls Royce key fob and key programming needs. This includes reprogramming or replacing. They can give you an estimate of the work required. Make sure you ask the locksmith about their rates and credentials prior to hiring them.

Dead 12 Volt Battery

The 12 volt battery inside your Rolls Royce Dawn provides high current to start the engine as well as for all onboard computers and accessories. This battery will not work in the event of a dead battery or if the current flow is disrupted by corrosion of the terminals of the battery or the ground connection.

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

If the results aren't satisfactory, you can replace the battery with another one with the same size, voltage and specifications. Make sure that you fully charge the replacement battery prior to using it. A common cause for an unsatisfactory battery is internal degradation resulting from the aging process, but it can be caused by an excessive draw or if the vehicle is for a long time.