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.
Pre-Drive Check, Phase 2
In phase 2 of the pre-drive check, the alarm path from the SIM to the igniter output stages is checked.
The SIM transmits an alarm pulse, which is taken back after a 30 ms waiting period. Now each satellite transmits a status telegram with an OK signal to the SIM.
If the alarm mode is not correctly received, a fault entry is made in the fault memory.
This concludes the pre-drive check and the modules can now start normal operation. This means that the satellites with ignition capacitors can now be charged.
If all ignition capacitors are fully charged, this is notified in the status telegram to the SIM.
The AWL is switched off when all the modules report full ignition capacitors and no fault is stored.
Use the Manual With the Right Hardware
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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.
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