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.
If the driver press the SSB while prerequisites on brakes, fob authentication and transmission status are satisfied, the BES System will proceed with the locking/unlocking of the steering column, the control of the terminal, and the cranking of the engine.
The driver can release the SSB as soon as this sequence initiated. After positive response from immobilizer interrogation, the system will activate the starter motor and communicate with the EMS to check the engine running status for starter release.
The driver will be able to stop the engine by a short push on the SSB if the vehicle is already in standstill. Emergency engine stop will be possible by a long press of the SSB or 3 consecutive presses in case the vehicle is in ENGINE RUNNING.
If the conditions for engine cranking are not satisfied while a push on the SSB is detected and a valid fob authenticated, the system will unlock the steering column and switch the terminals to IGN. Another push on the SSB will be necessary to start the engine.
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. | Character lamp | Conditions |
|---|---|---|
| 1 | Indicator Lamp ON | Door open, Tail lamp ON, ACC, IG ON |
| 2 | Indicator Lamp 30sec ON → Lamp OFF | Door close, Tail lamp OFF, IG OFF |
| 3 | Indicator Lamp OFF | Remote LOCK, Passive LOCK |
| 4 | Rheostat at tail lamp ON (Illumination lamp) | |
| No. | Ignition conditions | Start Button LED status |
|---|---|---|
| 1 | IG OFF | LED OFF |
| 2 | IG ACC | Amber color LED ON |
| 3 | IG ON (Engine OFF) | Blue color LED ON |
| 4 | Cranking | Maintain LED status before cranking |
| 5 | Engine running | LED OFF |
NO RELATED
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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.