We encountered a frustrating car issue while traveling 500 miles from home with our 2000 Toyota Sienna minivan, which has around 150,000 miles. Seeking help from my dad’s trusted mechanic, we were directed to a transmission specialist, an ATRA participant, due to suspected transmission problems. After a thorough diagnostic, it was confirmed that a transmission repair or rebuild was necessary. Opting for the more comprehensive rebuild for peace of mind and considering the cost implications, we proceeded with the service.
However, just four hours and approximately 240 miles after picking up our minivan, the check engine light illuminated. A subsequent diagnosis revealed a transmission code: P0770, indicating a shift solenoid E fault. We were informed that this particular part failure could potentially lock the vehicle into second gear. Cautiously, we drove the minivan home and took it to a local transmission shop that was part of the warranty network of the original repair shop. They inspected the vehicle but were unable to find any issues, and we were sent on our way.
Around 250 miles later, and about 150 miles from home, the check engine light reappeared. This time, we visited our trusted local mechanic who confirmed the same P0770 code and reset the light. When we contacted the original transmission shop with this information, they stated that they couldn’t diagnose the problem solely from the code number and the mechanic’s readout. They advised us to drive the vehicle until the light came on again for further diagnosis. We followed their instructions, and after another 200 miles or so, the check engine light returned.
This time, we took the minivan to the local transmission shop again – the same one within the warranty network, but not the original shop that performed the rebuild. After eight days, they reported “discovering” that the issue was indeed the solenoid valve. However, they surprisingly claimed that despite the solenoid valve being located inside the transmission, it’s not considered a “Car Transmission Part” for warranty purposes. Their reasoning was that it’s an “electrical” component, while transmissions are fundamentally “mechanical.” They offered to fix the solenoid valve for an additional $535.
We argued that having paid for a transmission rebuild, we reasonably expected the entire transmission system, including all internal components, to function correctly, at least within the 15,000 mile or 1-year warranty period. The local shop is now communicating with the original shop to discuss the situation and potential warranty coverage. We were informed that if they cannot reach an agreement, we would need to deal directly with the original shop, which is 500 miles away. Currently, our minivan remains disassembled at the local transmission shop, leaving us in a difficult position.
This situation raises a critical question: Is a solenoid valve, when located inside the transmission, genuinely considered a part of the car transmission for warranty claims? Should the repair of this solenoid valve be covered under our ATRA warranty following the transmission rebuild? We are seeking clarification and advice on this matter, as we urgently need our car back for the holidays and wish to resolve this issue fairly without incurring unexpected and potentially unwarranted costs. We are looking for guidance to understand our rights and the standard industry practices regarding transmission warranties and component coverage.
