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.
Regular sleeping
This service information provides an overview of the typical current values that are measured in an external closed-circuit current measurement with a current measuring clip during regular sleeping.
Regular move into sleep mode without additional wake-up alarm to query coolant temperature (logarithmic illustration):
| No. | Time | Event | Typical current values |
|---|---|---|---|
| 1 | 0 - 3 min | Reaching the idle state | 6 to 15 A depending on the equipment. |
| 3 - 8 min | Vehicle sleeping | 0.4 to 1.5 A depending on the consumer units that are switched on (e.g. map-reading light or glove box light). | |
| 2 | 8 - 9 min | FRM wakes up the vehicle: Consumer unit shutdown. | 6 to 10 A depending on the equipment. |
| 9 - 30 min or 9 - 60 min | Vehicle sleeping | 500 to 650 mA depending on the equipment. | |
| 3 | 30 or 60 min | Shutdown of terminal 30 switched | < 25 mA depending on the equipment. |
As of integration level 03/2009, terminal 30 switched is normally switched off 30 minutes after switching off terminal R and on vehicles with auxiliary heaters (optional equipment 536) 45 min after switching off terminal R.
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.