2005 Subaru Legacy: adaptive cruise control problems

Filed Sep 20, 2022 · Acceleration · NV

While driving, cruise control and check engine light comes on and then the car won't accelerate. Engine revs really high and when pushing accelerator pedal, car will not move. The check engine code states "throttle position sensor". This has happened more than 20 times

Filed May 14, 2017 · Fuel system · 70,000 miles · VT

Fuel leaking from top of gas tank. No collison. Gas smell began as check engine light lit and cruise control light started slow blink. Smell has gradually grown stronger. Smell strongest on the passenger side. Smell sometimes enters car interior.

Filed Aug 28, 2014 · Engine · 11,500 miles · MO

The 2005 suburu suddenly stops no matter weather going 35 MPH or 70mph without warning! Later the engine warning flashes, then the cruise control flashes, after abt. 20 seconds it starts, but stops intermittently w/o warning. Life/death risk.just bought it 5 mos. Ago. The turbo malfunctions--cracks.

Filed Sep 8, 2008 · Acceleration, Transmission · 84,000 miles · MD

I have 2005 subaru legacy 2.5i, base model. First the rattling noise by the driver side dash board and the cruise control failed, which it is already on recall status (cruise control only). Now, the clutch is failing by engine cutting off in the middle of driving when the clutch is engaged-- I mean while driving over 60 miles. I consider it is life threatening situation where the car manufacture should look into it.

Filed Jan 12, 2008 · Acceleration · 66,000 miles · MI

Cruise control randomly disengages while driving under normal conditions, causing a sudden and unexpected loss of vehicle speed.

Filed Jun 13, 2007 · Acceleration · NH

Cruise control on 2005 subaru legacy wagon is intermittent over a range of operating conditions (50-70 MPH, straight/flat, slow/steady curve, uphill, hot weather, cold weather, etc.). Cannot pinpoint to one particular combination of operating conditions. Perhaps intermittent electrical connection, bad sensor or computer control failure. When problem occurs, "cruise" light always stays on, but "set" light turns off and engine loses acceleration. Resuming/resetting the cruise control does not solve the problem. Notified milford subaru (nh) during 22,500 mi service and they could not recreate problem. Notified milford subaru (nh) again during 30,000 mi service (they have the car now, will be picking up tonite). Have not been able to find the federal safety agency recalls or service bulletins on this topic, but have seen internet message boards where other subaru owners have experienced a similar problem with the 2005 legacy.

Filed Nov 4, 2005 · Acceleration · 12,000 miles · NY

Under normal driving conditions, cruise control disengages randomly causing unexpected vehicle deceleration.

Filed Sep 6, 2005 · Electrical, Lights · 2,000 miles · CO

With approximately 2,000 miles on my brand new subaru legacy gt I was driving 80 miles to my home. The lights on my dash were flickering and the cruise control worked, then stopped working when I would try to decrease or increase my speed. Once I got into the canyon about 20 miles from home (a curvy road next to the colorado river) all my interior and exterior lights went off suddenly. I maneuvered my way to the side of the road, shut the car off then turned it back on. Thankfully, the lights came back on. I took the car into the subaru dealership and they didn't find anything. They said they couldn't fix it until the problem was duplicated. My main concern with this statement is that if I crash my car and injure myself or kill myself because the lights went out, it will be fairly difficult for anyone to "duplicate" the problem. Second issue happened about a month later when the cruise control light began flashing and the check engine light came on. I took it to the subaru dealership and they discovered a valve body problem. Meanwhile a day later I was driving and the car would barely move. It felt as if it were stuck in 3rd gear. I took it back in and drove a rental car until the part came in. I have the car back now with the 2nd and 3rd problem fixed, but with still no resolution to the fact that my lights could again shut off while I am driving at night.