Contents: Starter fuse ⇩ Wire Color Codes ⇩

NOTE: Shown is the TD4 engine version, same for i6
| Pos. | Spare part number | Name |
| 1 | - | Battery |
| 2 | - | Central Junction Box (CJB) |
| 3 | - | Auxiliary Junction Box (AJB) |
| 4 | - | Battery Junction Box (BJB) |
| 5 | - | Starter |
| 6 | - | Generator |
The battery is located under a cover on the left side of the engine compartment. The battery is mounted on a shelf and secured with a clamp plate and bolt assembly. The battery supplies power to the starter, alternator, and BJB.
The BJB is located near the left front suspension strut. The BJB contains fusible links, blade, fuse and J-case fuses, and relays for distributing electrical power between the various vehicle systems and electrical distribution boxes.
NOTE: Fuse links are installed on the inside of the BJB under removable covers.
The CJB is mounted behind the glove box and receives its main power supply from the BJB. In addition to providing space for blade fuses, the CJB is the main controller for a number of vehicle systems. These functions are described in the relevant sections of this manual.
The AJB is located under the luggage compartment carpet, next to the spare wheel well. The AJB is modular and, depending on the vehicle equipment, contains up to three separate units. The AJB contains blade and J-case fuses and relays that supply power to the systems used in the rear of the vehicle. The AJB receives its main power supply from the BJB.
Starter fuse

| Pos. | Spare part number | Name |
| 1 | - | Starter fuse |
The CAL3 starter fuse is built into the wire between the battery and the starter/generator. The fuse is located near the positive battery terminal and is integrated with the wire assembly. If the fuse blows, the entire wire assembly must be replaced.
Wire Color Codes
New wire color codes have been introduced in the electrical schematic diagrams. These new codes are shown in the following table.
| Color | Code |
| Black | BK |
| Blue | BU |
| Brown | BN |
| Green | GN |
| Grey | GY |
| Orange | OG |
| Red | RD |
| Violet | VT |
| White | WH |
| Yellow | YE |
Wire tracer color codes are separated from the main wire color code by a hyphen, such as BU-RD for a blue wire with a red tracer. For more information, refer to the Electrical Schematics and Electrical Manual.
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