| mdxcc |
Hi, I have 2005 MDX and the heated seat stopped working well. It used to be hot but, suddenly, it is only warm and the heating cycle became shorter, especially the bottom seat. The dealer told me that they did not find any problem and it was hot enough, when they test drove. I asked them how they know that it is hot enough and they told me that they know it by seating on it by themselves, which can be very subjective opinion. They told me that the heated seat either works or not and there is no way to prove the temperature of it and there is also no standard to meet. Is this true?
They also told me that 2004-2005 models have weak heated seats but I do know that it is not true because I drove the car for several years! I feel that they just tried to ignore the matter because it is covered by warranty.
Is there any way to find out the temperature of the heated seat? Is there any standard to meet? What is my choice to resolve this problem? My MDX was always serviced in this dealer and I do not want to shop around and find new mechanics... Thanks in advance! Any suggestions will be appreciated. |
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| highcountrymdx |
FYI (From an earlier post):
"When the 'low' position is selected on the passenger's seat heater switch, power is supplied constantly to a seat cushion heater. The voltage is stepped down via a resistor, and there is no heat regulation.
When the 'high' position is selected, voltage is not stepped down, however it passes first through a thermostat and then a thermo breaker before it supplied to the seat heater. The thermostat cycles on when the temperature at the thermostat is lower than 104F (+/- 6F). It will turn off when the temperature reaches 122F (+/- 5F). The thermo breaker is there as a safety, in case the thermostat fails to cutoff the voltage, as shown above. The thermo breaker will cut seat heater voltage when the seat temp reaches 149F (+/- 9F). It will reset when the temperature falls to 104F (+/- 9F). The driver's seat is exactly the same, except voltage is supplied both to a cushion heater, as well as a seat back heater. Note that the thermostat is not designed to regulate a constant temperature output. It either supplies unregulated voltage on or off within a preset temperature range. That's why you may sense the temperature rising and falling, as the thermostat does its job.
Assuming the thermostat is operating within limits, theoretically you could have the seat heater turn on at 98F and off at 127F, a maximum 29F spread. Let's say, however the thermostat is not working, then the thermo breaker is controlling the heater at anywhere between 95F to 158F, a maximum 63F spread.
As an operating technique, I carry the switch in high until the seat reaches a comfortable temperature, then I switch to low, which I find is comfortable for the long run." |
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| pianoman41 |
quote:
Originally posted by highcountrymdx
As an operating technique, I carry the switch in high until the seat reaches a comfortable temperature, then I switch to low, which I find is comfortable for the long run."
Agreed. I do the same thing with both our MDX and my TL-S. High until it gets uncomfortable and then switch to low. |
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| midnightMDX |
| :werd: I also do the same. My truck sits outside, so it does take a bit longer to feel the heat. But once it does, its super hot. mdxcc maybe you should try another dealer if available. |
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