Where is the ABS warning light situated on the trailer?
- At the front of the trailer
- In the middle of the trailer
- On the side of the trailer at the rear ✓
- On the roof of the trailer
Answer: C. On the side of the trailer at the rear
The trailer ABS warning light is on the side of the trailer at the rear, where you can pick it up in the tractor's side mirror.
Why this is the answer
The handbook explains that trailer ABS systems use an indicator the driver can see in the tractor's mirror, so the warning can be noticed from the cab. It notes the light may be mounted at the front left or rear left of the trailer, then states that this ABS warning light sits on the side of the trailer at the rear, and that the driver should be able to see it in the tractor side mirror. That is why the rear side position is the answer here.
Why the other answers are wrong
- A. At the front of the trailer — The handbook mentions a front left mounting as a possibility, but its description of where this warning light is positioned places it at the rear side, not the front.
- B. In the middle of the trailer — Nothing in the handbook puts the trailer ABS warning light in the middle of the trailer; the described spot is the rear side, seen in the mirror.
- D. On the roof of the trailer — The handbook never places the warning light on the trailer roof; it describes a side mounting at the rear that the driver can see in the tractor side mirror.
Remember it
Picture where your mirror aims: the trailer's rear left side, not the nose.