A new car does not open with a mechanical key after the battery is discharged - why does this happen?
Let's call the client Denis. The car stood for a long time. The battery is dead. The key fob has stopped working. Denis took out a mechanical key and…
The client's name has been changed.
Let's call the client Denis. The car stood for a long time. The battery is dead. The key fob has stopped working. Denis took out a mechanical key and unexpectedly discovered:
“I have the key, but I still can’t get into the car properly.”
On modern cars, the access system can be more complex than it seems.
Why does the central locking depend on power supply?
The electronic part of the car can control:
- central locking;
- door drives;
- keyless entry.
When the battery is completely discharged, these functions become unavailable.
But there is a mechanical key?
Many vehicles have a standard mechanical backup. However, problems may arise:
- the cylinder has not been used for years;
- the mechanism is dirty;
- corrosion has appeared;
- the owner does not know the location or procedure for using standard mechanical access.
Why it is important to check backup access in advance
If you only use a button or keyless system, the mechanical cylinder may remain unused for many years. It is useful to periodically check the standard backup script in accordance with the vehicle's instructions.
Do I need to install a third-party battery protector?
The original article suggests a specific device that disconnects the load until it is completely discharged. Such an intervention cannot be recommended universally.
Any changes to the vehicle's electrical system must:
- correspond to the design of the machine;
- do not violate standard security;
- Performed by a qualified auto electrician.