Freightliner M2 Starter Relay Location (2024)

FAQs

Where is the fuse on the Freightliner M2 starter? ›

Factory-Wired M2 Fuse

fuse panel under the hood on the driver's side.

The starter relay is mounted on top of the starter solenoid.

The main fuse box, also known as the power distribution module, or PDM, is located under the hood on the left front fender just forward of the bulkhead module.

NOTE: The Chassis Module is mounted on the left frame rail, aft of the cab.

Most often, a true starter relay is a small black cube plugged into an electrical fuse/relay box in the engine compartment, whereas a starter solenoid is (in most cases) attached directly to the starter on the engine (although it is sometimes located elsewhere in the engine compartment).

One of the best ways to determine if a car fuse has blown is by using a test light. It should illuminate both ends of the fuse, and, if it doesn't, it needs to be replaced. Sometimes, a blown fuse is caused by a damaged wire, motor, or other part.

The Starter Relay is a device that utilizes a small amount of electrical current from the ignition switch to energize an electromagnet that operates a larger current carrying switch, which in turn triggers the operation of the Starter Motor or Starter Solenoid.

The starter solenoid is attached to the starter in most applications. The starter is a cylindrical component that is usually attached to the side of the transmission's bell housing, where the transmission and engine meet.

The powertrain PDM houses many of the fuses and relays for the engine, transmission, and aftertreatment system (ATS). There is a label on the cover of the powertrain PDM identifying the fuses and relays. The PNDB houses up to three MIDI fuses and four ATO fuses. A label on the cover of the PNDB identifies the fuses.

The fuse panel is behind the glove box on the passenger side of the vehicle. Open up the glove compartment and remove the screws that keep it in place.

What years are the Freightliner M2? ›

First generation (M2, 2003–2023) Following a $250 million development program by Freightliner, the Business Class M2 was introduced at the beginning of 2002; starting with 2003 production, the all-new model line was gradually phased in as a replacement of the previous FL-Series.

The Bulkhead Module (BHM) is the primary module of the vehicle electrical system, and controls the operation of the other multiplex modules in the system and a variety of other vehicle components either directly or indirectly.

The starter motor is typically hardwired to the battery via the starter solenoid due to the very high current draw required for operation. The solenoid will have a fuse though. You will have to check the location in the fuse box (typically mapped on the lid/cover).

The ignition relay (when equipped) is typically found inside the vehicle's fuse box. It can be located using the diagram on the fuse box cover.

Between the vehicle's battery and the starter motor, the starter relay acts as a circuit completer or circuit breaker. It helps to increase the battery's current so that less current needs to be ignited. According to the description, this is a switch between the start solenoid and the start motor.