All vehicles covered in this guide have a 12-volt electrical system. The ground connection is via the negative battery terminal. The battery is located in the trunk.
A starter is used to start the engine. The starter switch is an integral part of the ignition switch and when turned on, it excites the traction relay installed on the starter.
The charging control lamp built into the instrument panel indicates that the electrical equipment is working properly as long as the battery charge is normal.
Charging and starting systems — general information (Mercedes-Benz S-Class W220)
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- General information
- Introduction to guide
- User manual
- Maintenance
- Power unit
- Engine repair
- Cooling and heating systems
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- Charge and launch systems
- Transmission
- Automatic gearbox
- Drive shafts
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- Petrol engine V6
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- Diesel engine OM603
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- Control system HFM-SFI
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- Mechanical gearbox 717.438
- Mechanical gearbox 717.454
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