Have your battery tested to determine its condition. Also, check the battery cable connections to make sure they are clean and tight. If the battery is low or dead, try jump starting the battery from another vehicle, or hook up a battery charger to recharge or boost the battery. A battery that has more than about 12.4 volts should have enough voltage to start your engine. What To Do: Open the hood and check battery voltage with a volt meter. What To Do: Replace the defective Start Engine Button with a new one.Ī dead or discharged car battery can prevent your engine from cranking or starting. You have the correct key fob and the battery inside the fob is good, but nothing happens when you press the Start Engine Button or use the fob to press the Start Button. What To Do: Have your vehicle towed to your car dealer to have a new fob programmed for your vehicle, or call a certified locksmith who can replace and program a new key fob. If you accidentally picked up the wrong key fob for your vehicle, or the fob itself is defective, your engine will NOT start. Replace the dead battery inside the Smart Fob with a new battery as soon as possible. This should allow the button to inductively read the security code in the fob and pass the start command to the PCM. What to do: Hold the dead key fob against the start button, then use the fob to press the Start Engine button down. If the engine does not crank when you press the Start Engine button, any of the following may be preventing the engine from starting: NOTHING HAPPENS WHEN YOU PRESS THE START ENGINE BUTTON If the transmission is in Park or Neutral, and the brake is on, the PCM then sends a start command to the starter motor to crank the engine. The PCM then checks the status of the Park/Neutral Safety switch and the Brake Pedal Switch. Pressing the Start Engine Button sends a command to the PCM. This tells the PCM that the engine can be started at any time.īefore the engine will start, the transmission must be in Park or Neutral, and the driver must depress and hold the brake pedal. A Smart Fob sends a coded security signal to the Powertrain Control Module (PCM) via the vehicle's keyless entry system when the fob is inside the vehicle. Most newer vehicles have replaced the traditional key-style ignition switch with a Start Engine Push Button system. Auto Repair Library, Auto Parts, Accessories, Tools, Manuals & Books, Car BLOG, Links, Indexĭiagnose Start Engine Push Button by Larry Carley copyright
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