How to Fix Rolls Royce Dawn Key Fob Problems
Few cars can generate the kind of uncontrollable sigh that the Rolls-Royce Dawn can. Even with the top of the cloth down it's an amazing car.
It comes with all the usual devices, including motorised doors that can be shut at the push of one button. Umbrellas are concealed within the door's openings. It comes with an incredibly smooth V12 engine that can be driven in almost silence.
Dead Coin Battery
A dead coin battery is the most common cause of a key fob that isn't locking or unlocking the doors. It is also among the most simple problems to fix since it is usually replaced in just a few minutes. Make sure to use a new coin battery that is the same voltage, size, and specifications as the first to avoid a damaged battery. Also, don't use a battery that has been exposed to clean water (rain or clean tap water, or soda) since this can cause damage to the internal chip. If the key fob does not work after reprogramming it with an original key, visit an authorized dealer.
Other reasons that the key fob might not be working are Water Damage, Receiver Module Issues, Signal Interference and a Bad Electronic Chip.
Poor Battery Contact
The button cell battery on the key fob for your Rolls Royce Dawn may lose its charge. Replacing the battery is a quick and simple fix. Be sure to replace the battery with one of the same size and voltage. If you're unsure of what type to purchase, try asking an employee at the local auto parts store.
The corrosion on the battery terminals of the terminals of a Rolls Royce Dawn may also stop it from being able to start. The Key Lab is a frequent issue in older batteries, particularly those that haven't been charged for a long time. To ensure that your battery's terminals are corrosion free you can utilize a multimeter to test the conductivity. Set the meter to ohms, and use one of its probes to connect to the negative terminal on your Dawn. Then, you can connect the other probe to a plain metal part of the engine or chassis. The reading should be close to zero ohms.
A clicking noise is another indicator of a weak Dawn battery. This is because starter solenoid, the accessories and the engine require low current while the starter solenoid requires high current.
Water Damage
If you accidentally dropped your Rolls Royce Dawn key fob in the sink or left it in the rain, it is likely damaged by water. The electronic chip is protected by rubber seals, however prolonged exposure to sea salt or clean water can cause it to cease functioning.
Moisture can cause corrosion over time, leading to malfunctioning circuits that can cause issues with the security and ignition system of your car. It also can interfere with signal transmission, which can cause the remote keyless system to fail. The key fob may even disable your vehicle or activate the immobiliser system, leaving you without a vehicle.
To avoid this happening, remove the key fob and wipe it with a damp cloth to remove any moisture that remains. You can also place the key in a bag that is airtight with uncooked silica gel or rice packets to help to absorb any moisture that remains. Once the key has dried it should function as expected again. If not, the issue is most likely due to the 12 volt battery, or the receiver module, which will require changing the program to fix it.
Receiver Module Issues
If you've tried a new battery and the remote key fob still isn't working, it could be time to replace the receiver module. This is the component that receives the radio frequency signals from the key fob and converts them into commands for your car's electronic. If the chip inside the module is damaged, it won't be able to communicate with other modules inside the vehicle. You'll need a scanner to identify the issue. It will reveal what the computer in the vehicle is telling it.
The battery in the key fob of your Dawn has metal retaining clips that keep it in place and complete the circuit. These clips can corrode and make the battery contacts useless. If you are replacing the battery, ensure that it's the exact size and voltage to the original one. Otherwise it could cause damage to the chip inside the key fob.
If the key fob stops working 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 try cleaning the key fob using isopropyl alcohol, or electronic cleaners, but if you find that the chip inside the key fob has gone out of service, you'll need to replace it.
Signal Interference
Signal interference could cause your Dawn keyfob to cease functioning. The interference could be caused by objects within the vicinity of your car, weather conditions and transmitters that operate on the same frequency band. A faulty receiver module can also cause interference. If you're unable to solve your issue by decreasing the amount of interference, you could try using a signal booster or range extender.
It is essential to replace the button cell battery in your Dawn key fob if it's drained. To ensure compatibility with your vehicle, the battery should be the same voltage and size as the original. If your key fob has stopped working, the chip could be damaged.
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 to assist you with any Rolls Royce key fob or key programming needs, including reprogramming and replacement. They will be able to offer a quote for the work that is required. Be sure to inquire with 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 the accessories and computers onboard. If this battery is dead or the flow of current to the engine is disrupted due to corrosion of the battery terminals or ground connection, all on-board electronics including the remote keyless system will stop working.
A multimeter can be used to check the conductivity of your Dawn battery. To do this, take off the negative cable from the battery and touch one probe of the Multimeter to ground wire of the battery. Then, apply the other probe of the Multimeter to any exposed metal parts of your vehicle, like the body, chassis, or engine. The reading should be near zero ohms.
If the results are not satisfactory you can replace the battery with an alternative battery that has the same size, voltage and specifications. Make sure you fully charge the new battery prior to using it. A common cause for a bad battery is internal degradation resulting from old age however it could also be a result of parasitic draw, or if your vehicle was parked for long periods of time.