2006 Scion TC Engine cooling Problems

“Exiting highway, oil light on my 2006 Scion TC flickered on. I pulled over and there was no oil on the dipstick, all there was is a black goop. I regularly change my oil.”

“Head gasket leaking found 6 head bolts loose. Installed new head gasket set, new intake manifold. Paid 2000 dollars for repairs, now having problem with the engine. Makes loud noise and overheats. Mechanic and bar agent advised it was a manufacturing problem. Headbolts came loose again and now I need new engine. Previous to this my insurance had paid a total of 5000 dollars for some mechanical and body work. I have been without a vehicle for almost seven months now. Called toyota manufacture company they told me the only way they would inspect the vehicle would be if they charged me. …”

“Took my car to the shop for regular maintenance and found out that my car was leaking coolant out of three head bolts on back of engine block. They were stripped out because of toyota improper design of the block. 4 1/2 hole with 4 bolt with only the bottom 1 1/2 threaded which is only an inch to inch thread. Pour design for an aluminum block for that tensile strength. Its an 06 Scion TC they wanted 6000 to replace block. Even called corporate but they wouldn't do anything about it since its outside of powertrain warranty when they know its a known issue. …”

“The contact owns a 2006 Scion TC. The contact stated that after performing a vehicle inspection of the engine compartment, he became aware that the coolant reservoir was abnormally low; eventually finding a leak near the rear of the engine. No warning lights were illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the cylinder head bolts resulting in a coolant leak. The vehicle was not repaired. After investigating the failure, the contact related the failure to Technical Service Bulletin: S-SB-0004-11. …”