How to Fix Rolls Royce Dawn Key Fob Problems
There aren't many vehicles that generate the kind of involuntary gasp that the Rolls-Royce Dawn does. Even with the cloth top down it's a stunning vehicle.
It is equipped with all the classic features - such as motorised doors that close at the touch of a button as well as umbrellas concealed in the door opening. It also comes with a silky smooth V12 engine that can be driven with a whisper.
Dead Coin Battery
The most frequent reason for a key fob that does not be able to lock or unlock doors is a dead battery. It is also the most simple to repair as it can be replaced in only a few moments. Make sure to use a new coin battery that has the same voltage, size and specifications as the original to avoid a damaged battery. Don't expose a battery to pure water, such as rain, tap-water that is clean, or even soda, because this can damage the internal chip. If the key fob doesn't work after reprogramming it using an original key, you can go to an authorized dealer.
Other reasons the key fob may not be working include water damage, receiver Module Issues, Signal Interference and a bad electronic chip.
Poor Battery Contact
The button cell battery in the key fob of your Rolls Royce Dawn may lose its charge. It is simple to replace the battery. Be sure to replace the battery with one that is the same size and voltage. Ask an employee at the auto parts store if aren't sure what type of battery to purchase.
The corrosion of the battery terminals of the battery terminals in a Rolls Royce Dawn can also hinder the battery from starting. This issue is seen in older batteries, particularly if they haven’t been charged for a long amount of time. A multimeter can be used to test the conductivity to see if your terminals on your battery have rust. Set the meter at ohms and use one of its probes to connect to the negative terminal in your Dawn. Then, connect the second probe to a plain metal part of the engine or chassis. The reading should be near zero ohms.
A clicking noise is another indicator of an insufficient Dawn battery. This is due to the accessories, the starter solenoid and the engine require low current while the starter solenoid needs high current.
Water Damage
If you've accidentally dropped your Rolls Royce Dawn key fob in the sink or left it in the rain, it's likely suffering from water damage. The chip's electronic circuit is protected by rubber sealings but prolonged exposure to clean water or salty ocean water could cause it to cease functioning.
Over time, moisture can cause corrosion, which results in faulty circuitry that can cause problems with the vehicle's security and ignition systems. It can also interfere with signal transmission, which can cause the remote keyless system to fail. The key fob could unlock your vehicle or activate the immobiliser system, leaving you stranded.
To prevent this from happening, remove the key fob from its case and wipe it down with a the help of a damp towel to get rid of any moisture. You can also put the key in a bag with uncooked silica gel or rice to absorb any moisture. Once dry, the key should work normally again. If not, the issue is most likely due to the 12 volt battery, or the receiver module, which needs reprogramming to fix.
Receiver Module Issues
If you've tried a new battery and the remote key fob isn't working, it might be time to replace the receiver module. This component receives radio frequency signals from your key fob, and converts them to commands for the vehicle's electronic system. If the chip in the module is damaged, it will not be in a position to communicate with other modules within the vehicle. To identify the issue you'll need an OBD scanner that will reveal what the onboard computer is telling it to do.
The battery in the key fob of your Dawn includes metal retaining clips that keep it in place and complete the circuit. These clips can get corroded and render the battery's contact ineffective. If you replace the battery, make sure it's a perfect match in size and voltage to the original one. It could damage the chip in the key fob.
The Keylab could be the reason behind a key fob that suddenly stopped working. This can happen when the key fob is dropped into water or is soaked by soapy water. You can clean the keyfob with electronic cleaners or isopropyl alcohol but you will have to replace the chip in case it becomes fried.
Signal Interference
Signal interference could cause your Dawn keyfob to stop working. Interference can be caused by objects in the vicinity of your car or weather conditions, or transmitters using the same frequency band. A defective receiver module can also cause interference. If you are unable to reduce the interference, you may be able to use an extender of range or signal booster.
It is crucial to replace the button cell battery in your Dawn key fob in the event that it's drained. The battery should be the same size, voltage and type as the original battery to ensure your vehicle is compatible with the key fob. If your key fob starts to work intermittently, it could indicate the chip is damaged.
If you've tried all the above and your key still won't unlock or lock, then it's time for a locksmith. A reputable locksmith will be able help you with any Rolls Royce key fob or key programming requirements, including replacing and reprogramming. They'll be able to offer a quote for the work required. Be sure to inquire with the locksmith about their rates and credentials prior to hiring them.
Dead 12 Volt Batterie
The 12 volt battery that is in your Rolls Royce Dawn is responsible for supplying high electrical current, not only for starting the engine but also to supply power to all accessories as well as on-board computers. If the battery is in a dead state or the flow of current to the engine is disrupted due to corrosion of the battery terminals or ground connection, all electronic components on board including the remote keyless system will stop functioning.
You can use a multimeter to test the conductivity of your Dawn battery. To perform this test you must disconnect the negative cable from the battery and then apply one probe of the multimeter to the ground wire of the battery, and the other probe to any exposed metal component of your vehicle's engine chassis or body. The reading should be near zero ohms.
If the results aren't satisfactory If the results are not satisfactory, you can replace the battery with a new one with the same voltage, size and specification. Be sure to fully charge the new battery prior to using it. A common cause of a bad battery is internal degradation resulting from the aging process but it can be caused by an excessive draw or if the vehicle has been left in a garage for a long period of time.