The sharing of some vehicle repair and maintenance cases is updated irregularly. Let more people understand some tips in daily car use, maintenance, and testing. Use cars to understand cars better!
A Cadillac SRX with a driving mileage of 7W kilometers for 12 years had a problem of “no remote key found” when starting with one click. The meter shows that no remote control key has been found, which means that the vehicle cannot ignite or drive.
In the past, the one-button start function was only used in high-end cars, but now it is very common in cars weighing more than ten to two hundred thousand yuan. After getting on the car, you can start the vehicle to ignite the fire without inserting and turning the key.
The manufacturer is equipped with a one-button start. In addition to being easy to use, it is mainly to increase the technological sense of the vehicle and increase the selling point. However, there are also a few problems in use. For example, some cars do not respond when the one-button start switch is pressed, and no remote control key is found on the instrument, which makes it impossible to ignite or drive.
What are the reasons for this? Is the key dead or a battery problem? Is there signal interference in your location? Or is the electricity caused by leakage exhausted in advance? Could the transmitter and receiver be malfunctioning? Line, open circuit? This requires us to judge one by one.
As long as it is a one-button-activated vehicle, there is an emergency start place on the vehicle. When the key cannot be found, place the remote control in the emergency start place and you can start the fire normally. This position is different for each car. Some are under the water cup holder, where the remote control is placed, some are inside the one-button start switch, where the remote control needs to be placed on the switch, and some are next to the shift lever. You can check the vehicle user manual yourself or directly call the 4S store to inquire about the after-sales service sales service to know where your car is. You must know where to start the emergency. You may encounter a situation where the key is not found.
First of all, no key problem was found, most of the reasons were caused by signal interference nearby. When the car leaves this area, it will return to normal.
This requires knowing the working principle of one-button start. There are multiple antennas in the car, and the antennas will send out radio waves to search for the key. When a legal key is found, the start switch will be allowed to start. If a legal key is not found, the start is not allowed, and the key will be displayed when starting.
The problem with this car is neither the remote control key has no power, nor is it an interference problem (it is specially driven out of the door to find an open place for testing). After testing with a road pass, the fault code shows-the voltage of the antenna 5 is too high/open.
Line testing is underway
After this inspection, the weather was getting late, so I went to eat first and then came back.
Find out where the problem is, a section of the route is open, and replace it.
It was already dark after the repair. The mobile phone light is dazzling!!!
Fortunately, the problem was solved. After test run, it can start normally.
Can the key still be on if it runs out of power? It can ignite, but you have to place the remote control in an emergency start-up place. This place is coil induction, so even if you take out the battery, you can still start the fire.
Can the key still be on if it runs out of power? It can ignite, but you have to place the remote control in an emergency start-up place. This place is coil induction, so even if you take out the battery, you can still start the fire.
GeorgeBecher 
7 
September 11, 2024 
