Start & Stop Engine Start Button malfunctions and problems. Why is the engine not starting when I push the Engine Start Button ?….
Most new vehicles use “Start & Stop Engine” technology instead of the traditional key-style ignition switch. The smart key is used to enter the vehicle and sends an encrypted signal to the Powertrain Control Modul (PCM). This signal informs the Powertrain Control Module (PCM) that the engine can be turned on at any time.
The automatic transmission must be set to “P/Park” (or “N/Neutral”) before the engine can start. Also, the driver must ensure that their foot is on the brake pedal. The PCM will issue a command as soon as the Engine Start Button has been pressed. The PCM checks the status of both the brake pedal switch and the Park/Neutral safety switch on the transmission. The PCM will send a start command to the engine starter if the automatic transmission is in Park or Neutral.
But the Engine Didn’t Start When You Pressed the “Engine Start Button”.
If the engine doesn’t start after you press the Engine Start Buttons, one of these things could be preventing it from starting:
Smart Key Battery Could Have Been Dead
The smart key should be held close to the button that starts the engine. Insert the card into the slot if there is one. This allows the PCM inductively to read the security code taken from the key. When the card is inserted into a slot, the system will tell you if it is full or empty. The engine should be running. A spare key can be used to start the vehicle if it is not already.
Replace the dead battery on the smart key as soon as you can with a new one.
Wrong or defective key
If you use the wrong key or the wrong type of key, the engine won’t start. If this happens, contact a licensed locksmith who will program a replacement key for your vehicle.
Defective Engine Start Button
Your key is correct and your battery is good. The “Engine Start Button” does not activate. The switch could be defective or the wiring may have failed. A professional service or repair shop should be contacted.
Car battery dead
Your vehicle may not start if it has a weak or dead battery. You should check the battery voltage with a voltmeter in this instance. To start the engine, a battery that is more than 12.4 volts will suffice. You can try starting the engine with a different battery if your battery is dead or weak. Or charge your battery. Make sure to inspect the terminals of your battery. To determine the condition of your battery, have it tested. You should replace any battery that is more than 4 years old.
Failure of the PCM
If the anti-theft device is malfunctioning or the PCM is not working properly, the engine won’t start. The vehicle should be thoroughly inspected for further diagnosis. The system sending the security code may have a problem.
Defective Starter Motor
If the solenoid, relay, module or starter motor are defective, the engine will not start.
You can turn off the starter to check whether it turns on. These tests require a professional electrician. It is necessary to replace the starter motor with a working one if it becomes defective. The solenoid, module, or relay may be responsible for the failure of the starter motor if it passes all tests. It is important to inspect all cables and wires that are connected to the starter. The starter motor may not turn if there are loose, rusted, or damaged connections.
A damaged starter drive gear, or missing or broken teeth can also prevent the starter’s from turning on.
Blown fuse
Locate the Power Center beneath the hood to check for blown fuse in the starter circuit. Replace as necessary, but always use the same amp.
Engine runs but cranks but doesn’t run
This problem is not due to the “Engine Start Button”. It could be that another problem is preventing your engine from starting, compressing, or delivering fuel. To determine the problem, take your vehicle in to a mechanic.
Possible causes are a defective fuel pump or fuel pump relay, low fuel level, bad fuel, Crank Position Sensor problems, timing belt problems, and others. countable.
