Can You Start a McLaren 720S If The Key Battery Is Dead Or Not Working? | GVE London – Blog

The McLaren 720S is renowned for its blistering performance, advanced aerodynamics, and stunning design. Powered by a 4.0-litre twin-turbo V8, it produces 710 horsepower, accelerating from 0 to 60 mph in under 3 seconds. With a lightweight carbon fibre chassis, it features cutting-edge, advanced features. 

The 720S offers a keyless start just by pushing the ignition button when the key fob is in the proximity of the car. Thus, you should make sure that the key fob has an ample battery, and it does not die, because your 720S won’t start if this happens.

Understanding the Problem – The McLaren 720S Not Starting Because of a Dead Key Battery or Key Not Working

In the video, you can see that a customer called as he was stuck in his McLaren 720S. As he was trying to start his car, he failed a few times, and the ignition said that the key was not found. It’s possible that the battery of the key fob died or the key stopped working because of other technical issues.

Whatever the case may be, it’s a hectic situation as you’ll be stuck in your 720S without being able to start it. You’ll be in trouble if you are getting late to reach somewhere or if there is an emergency to attend to, and your car is not working. So, what will you do if this happens to you? Thankfully, there is a simple way to fix this problem and start your McLaren 720S when its key is not working.

Solution – Starting the McLaren 720S When the Key Battery is Dead or Not Working

Even after regular McLaren servicing, it’s common for the battery of your 720S key fob to die. Other than a dead battery, several other reasons can cause the key to not work. The 720S has a keyless entry and push button start, and without the key working, you won’t be able to start your car and drive it.

There is no need to panic or call someone for professional assistance because you can easily fix this issue yourself and start the car. In the video, for demonstration purposes, we first removed the battery from the key fob. After the battery is out, the key won’t work and the ignition will say the key was not found.

There is an easy way to start the car. Just look underneath the central console of your McLaren 720S and you’ll see a cup holder there. Just rest your key in the cup holder and wait for a few seconds. Next, press the brake hard and press the start button. Your 720S will turn on and you’ll be good to go. It’s that simple.

Reasons Behind McLaren 720S Key Not Working

The most common reason is a dead battery but many more reasons can lead to the key of your 720S not working. Let’s check out some of them –

• Dead Battery – Like any electronic device, the key fob has a battery that powers its functions. If the battery is low or depleted, the key may not transmit a signal effectively to the car. Replacing the battery is typically the first step.

• Key Fob Malfunction – If the key fob itself is damaged or malfunctioning due to physical damage or internal circuitry issues, it may not send the correct signal to the car. In such cases, the key fob might need to be repaired or replaced.

• Programming Issues – Sometimes, the key fob can get unprogrammed from the car’s system. This happens due to electrical issues, software glitches, etc. Re-syncing or reprogramming the key to the car’s system will resolve the problem.

• Electronic Interference – Electronic interference from other devices or nearby electromagnetic fields can disrupt the signal between the key fob and the car. This is less common but can occur in certain environments.

• Faulty Receiver in the Car – If the car’s receiver that picks up the signal from the key fob is faulty or damaged, it won’t recognize the key fob’s signal. This would require diagnostics and potentially repair by a qualified technician.

• Physical Damage or Environmental Factors – Physical damage to the key fob or exposure to extreme environmental conditions (moisture, extreme temperatures) can also cause the key fob to malfunction.

Conclusion

Most supercar owners take care of the service and maintenance of their vehicle but usually neglect its key. The key fob battery can die or it can stop working due to technical issues. You won’t be able to start your 720S with a dead key. However, by following the simple steps discussed in the above post, you can start the car.

Place the key in the cup holder below the centre console of the 720S. Press the brake hard, push the ignition button, and the car will start as normal. Still, you need to replace the battery or get the key fixed to prevent such issues again. Visit GVE London to get your 720S key fixed along with wrapping, detailing, servicing, customisations, modifications, etc. for your supercar.