The Suzuki Liana (also known as the Suzuki Aerio) was produced from 2001 to 2008 for global markets. This guide provides fuse and relay box diagrams, component locations, and circuit descriptions for the Suzuki Liana / Aerio (chassis codes ER/RH). The cigarette lighter fuse is highlighted in bold.

Fuse and relay configurations may vary depending on the vehicle’s model year, destination market, and trim package.
Engine Compartment

The engine compartment fuse box is located next to the battery under a protective cover. A schematic diagram is printed on the underside of the cover.
| Diagram |
 |
| No. |
Description |
| 1 |
80A Main fuse (Battery, Alternator, All Circuits) |
| 2 |
60A Ignition switch |
| 3 |
60A Passenger compartment fuse box main feed |
| 4 |
60A ABS control module |
| 5 |
30A Cooling fan relay |
| 6 |
15A Instrument cluster, Right headlight (RH) |
| 7 |
15A Left headlight (LH) |
| 8 |
30A Radiator fan control relays No. 1 & No. 2 |
| 9 |
20A A/C compressor relay, A/C condenser fan relay |
| 10 |
15A Main relay |
| 11 |
15A Brake light switch |

A primary fusible link / main distribution fuse may also be mounted directly to the positive battery terminal.
Passenger Compartment

The cabin fuse box is located under the dashboard on the driver’s side, behind a protective access cover.

Representative image.
| Diagram |
 |
| No. |
Description |
| 12 |
10A A/C compressor relay, A/C fan relay, heated mirror switch, blower motor relays |
| 13 |
15A Heated seats |
| 14 |
20A Rear window defogger switch/relay (wagon) |
| 15 |
15A ECM, Data Link Connector (DLC), instrument cluster, interior/dome lights, trunk light, audio system, TCM |
| 16 |
10A Rear fog light switch, rear fog light control module |
| 17 |
10A Security horn / siren |
| 18 |
15A Spare fuse |
| 19 |
10A Tail/headlight relay, parking lights, instrument panel lighting, license plate lights |
| 20 |
20A Central door locking system |
| 21 |
Spare |
| 22 |
15A SRS airbag control module |
| 23 |
15A Alternator, ignition coils |
| 24 |
10A Door lock controller, hazard switch, backup light switch, shift position sensor, drive mode switch |
| 25 |
15A Front wiper motor, headlight leveling actuators/switch, combination switch, rear wiper relay and motor |
| 26 |
10A ABS control module |
| 27 |
10A Instrument cluster |
| 28 |
15A Cigarette lighter, power mirror switch, audio head unit, antenna amplifier |
| 29 |
15A Auxiliary power outlet |

Additional auxiliary relays and fuses may be located separately under the dashboard, including the rear window defogger relay (green), blower fan relay, power window fuse, and a 30A electronic power steering (EPS) control module fuse.