Why are the fans on my Toyota Sienna not turning on?
I have a 2005 Toyota Sienna, and when I turn on the A/C the cooling fans mounted to the radiator are not turning on . This causes the condenser to over heat and have excessive high pressure. I am not sure if the fans turn on at all.
Why does my cooling fan not turn on in my Toyota?
The Toyota’s fan only turns on when the coolant reaches a certain temperature, which is measured by a sensor. This sensor switches the cooling fan off and on as needed. A failed sensor can cause the fan to run excessively or not run when cooling is needed. The cooling fan in a Toyota has a relay to regulate when power is provided to the fan.
Why are the fans on my radiator not working?
If the fans never work, it could be the cooling fan ECU (located behind the grill), but check the 50A fuse powering it, and the fan relay first. If the fans fail to operate only with the AC, but do come on in normal hot engine conditions, then the fuse and relays are fine – it’s a command problem at the ECU or the AC controller.
Why are my cooling fans running at all times?
3. Cooling fans stay on at all times. If the cooling fans are staying on at all times, this is another (less common) symptom of a possible problem with the cooling fan relay. If the relay shorts internally, it may cause power to be permanently switched on, which will cause the fans to run at all times.
Why are the fans on my car not turning on?
If the fans fail to operate only with the AC, but do come on in normal hot engine conditions, then the fuse and relays are fine – it’s a command problem at the ECU or the AC controller. In addition, I would suspect the computer last.
What are the fan relays on a Toyota radiator?
I’m pretty sure the fan relay is for the cooling fans in front of the radiator (4 pin unit), and the next two 5 pin relays are the rear and front HVAC units. I wouldn’t be surprised if the 4 & 5 pin units weren’t actually identical parts, as one relay is a SPST, the other is a SPDT.
What are the problems with the 2005 Sienna?
The main issues with the steering system in the 2005 Sienna focus on difficulty turning the steering wheel, the power steering shaft leaking, the steering clicking while turning, the power steering shaft rusting, the traction control engaging randomly, and the car randomly pulling in either direction.
How much does it cost to fix a 2005 Sienna door?
To fix the broken weld in the door, the typical repair cost is around $1,190 and occurs at around 83,000 miles, with users reporting that the door electronics are not working. The main categories of concern regarding the 2005 Sienna the following year was the body and paint category, and the steering problems.
Is the Toyota Sienna front wheel drive or AWD?
Named after the Italian city of Siena, it replaced the first generation Previa van back in 1997. Designed with a more conventional front wheel drive layout, the Sienna is the only minivan in its class to offer the AWD option until the 2021 Chrysler Pacifica came on the market.