Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Button Engine Start System
The Button Start System allows the driver to operate the vehicle by simply pressing a button (called as SSB) instead of using a standard mechanical key.
When the driver pushes the SSB, upon authentication of the smart key, if the brake signal and the shift signal (P) have been received correctly, the SMK System will proceed with the unlocking of the steering column, the control of the terminal, and enable READY mode.
The driver can release the SSB as soon as this sequence is initiated. After positive response from immobilizer authentication, the system will communicate with the VCU, turn on the READY lamp and put the vehicle to "standby" mode to drive.
The driver can shut-off the EV by pushing the SSB button once in a standstill position or shift position on either P or N. Emergency engine stop can be made by long-pressing the SSB button or by consecutively pressing 3 times in vehicle READY mode.
If the conditions for READY mode are not met while detecting a push on the SSB or authenticating a valid fob, the system will unlock the steering column and switch the terminals to IGN. In this case, another push on the SSB is needed to enter READY mode.
In case of a vehicle equipped with SMART KEY system, fob authentication will not require any action from the driver. For limp home start or in case of vehicle without SMART KEY, the driver will have to push the start/stop button.
- Control Ignition and engine ON/OFF by Sending signal to IPM.
- Display status by LED Lamp ON/OFF. (Reddish orange or Amber)
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.