A steady yellow warning light on the dashboard indicates an issue with the tractor's ABS. Does this affect the trailer's ABS, assuming the trailer also has an ABS system?

Question: A steady yellow warning light on the dashboard indicates an issue with the tractor's ABS. Does this affect the trailer's ABS, assuming the trailer also has an ABS system?

Answer options: ✅ Yes, a tractor ABS fault will typically disable the trailer's ABS through the electrical connection.

• No, the trailer's ABS operates independently and would have its own indicator.
• Only if the tractor's ABS warning light is red, not yellow.
• Only if the trailer's brakes are hydraulically instead of air-operated.

Correct answer: Yes, a tractor ABS fault will typically disable the trailer's ABS through the electrical connection.

Explanation: In most modern commercial vehicles, a fault in the tractor's ABS system, indicated by a steady yellow warning light, can often disable the trailer's ABS as well, as the tractor provides the electrical and diagnostic interface for the trailer's ABS.