Transmission Temperature Warning
Transmission fluid is overheating — common when towing, climbing long grades, or in heavy traffic.
What it means
Automatic transmissions degrade rapidly when fluid overheats; every sustained 20°F over ~200°F roughly halves fluid life. This light often appears while towing beyond the vehicle's rating or in prolonged stop-and-go hill driving.
Can you keep driving?
Pull over, shift to Park, and let the engine idle so the transmission pump keeps circulating fluid to cool it. Wait until the light goes out. If it recurs quickly or the transmission slips or smells burnt, do not continue — have it towed.
What to do now
- 1
Pull over and idle in Park until the light goes out — do not shut the engine off immediately.
- 2
Reduce load: unhitch the trailer or lighten cargo before continuing.
- 3
Check transmission fluid level and condition per your owner's manual (dark or burnt-smelling fluid needs service).
- 4
If the light returns under normal driving, have the transmission scanned and inspected.
Likely causes
- • Towing or hauling beyond rated capacity
- • Low or degraded transmission fluid
- • Failed transmission cooler or blocked lines
- • Prolonged slipping (internal wear)
Typical fix cost
$150–$350 for fluid service; $200–$600 for an auxiliary cooler; internal damage can exceed $3,000
Ranges reflect mainstream US parts-and-labor pricing; your vehicle and region will vary.