Trailer / Tow Mode Indicator
A trailer is detected (or tow mode is on). A flashing light usually means a trailer-light wiring fault.
What it means
Steady: the car has detected a trailer electrically connected, or tow/haul mode is selected — shift patterns and stability control adapt for the load. Flashing or amber with a message commonly indicates a fault in the trailer light circuit.
Can you keep driving?
Yes with a steady light. If it reports a trailer-light fault, check the trailer's lights before driving — drivers behind you can't see you brake otherwise.
What to do now
- 1
Confirm trailer lights work (have someone watch while you brake and indicate) before every trip.
- 2
Clean the 7-pin/4-pin connector; corrosion there causes most faults.
- 3
Stay within your vehicle's tow rating — your owner's manual lists it.
Likely causes
- • Trailer connected / tow mode selected
- • Trailer wiring fault (bad ground, corroded connector, blown trailer fuse)
- • Failed trailer bulb or LED module
Typical fix cost
$0 if informational; $5–$100 for connectors, fuses, or trailer bulbs
Ranges reflect mainstream US parts-and-labor pricing; your vehicle and region will vary.