Question about 2001 Mazda Millenia

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Hi, I have a 2001 Mazda Millenia S. The light for my heated seats come on, but there is no heat in either the driver's or passenger's seat. What could be the problem?

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Mazdas are pretyy bad about the seat heating elements burning out. To verify that the problem is not the circuits to the elements, remove the 4 bolts holding the seat to the floor and tilt the seat back. Find the 2 pn connector for the heating element under the seat. (On the driver's side it will have a White and Red wire and a Yellow and Red wire. On the passenger side it will have a White and Red wire and a Green wire) Disconnect the connector. Using a standard 12 volt test light and a paper clip, use the paper clip to connect on end of the test light to the White and Red wire and probe the Yellow and Red (or the Green wire) with the test light probing end. With the ignition switch on and the seat switches turned on, the test lamp should light up. If it does, you need to replace the heating element in the seat. If it does not light up, post a comment to let me know, and I'll talk you through diagnosing the heater circuits.

Posted on Mar 25, 2011

  • Russ L. Tate Dec 29, 2012

    I followed the above instructions. I could not get the test light to light up, but the on/off switch indicator light works.

  • Brad Hendricksen
    Brad Hendricksen May 02, 2014

    I have the light on for the seat heater. What do I do?

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I am checking my

Posted on Dec 29, 2012

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Posted on Jan 02, 2017

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SOURCE: how to fix the tilt steering.. won't go down even when you push the auto button. My heated seats ain't workin either..(driver & passenger seat)

Most often, the stuck steering wheel is a result of a faulty 'tilt relay switch.' If you attempt to use the tilt switch and you can hear a clicking/whirring noise, then its your relay switch, if not, it may be the motor that is broken.

Posted on May 30, 2009

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1 Answer

Seat heater comes on by itself in 2004 yukon denali


Heated Seat Components
The heated seat system consists of the following components:
• Driver and passenger heated seat switches
• Driver and passenger seat back heater elements
• Driver and passenger seat cushion heater elements
• Driver and passenger seat back temperature sensors
• Driver seat module
• Driver door module
• Passenger door module
When there are modules involved in the operation of any componet that's acting up , the module's electronic's could be the culprit ! But without testing who's to say what the problem could be !
I would have it check for DTC'S
DTC B2425 or B2430
The driver and passenger seat heaters are controlled by the driver seat module. Power is supplied to the driver seat cushion and back heater elements through individual voltage supply circuits. Power is supplied to the passenger seat cushion and back heater elements through a common voltage supply circuit. All of the driver and passenger seat heater elements are grounded by the driver seat module through individual low side drive control circuits. The heater element control circuits are pulse width modulated to ground by the driver seat module in order to control the seat temperatures by regulating the current flow through the heater elements.
DTC B2435 or B2440
The driver seat module relies on inputs from thermistors installed in the driver and passenger seat backs to control heated seat temperatures. The thermistors are 2-wire sensors supplied with a 5-volt referenced signal circuit and low reference circuit from the driver seat module. Resistance through the thermistors varies with temperature causing the heated seat sensor signal circuit voltage levels to decrease as the seat back temperatures rise.
Install a scan tool.
Start the engine.
Turn the heated seat ON.
With a scan tool, observe the Heated Seat Sensor parameter in the data list for the driver seat module.
Does the scan tool indicate that the heated seat sensor parameter is within the specified range?
0.078-4.94 V

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1 Answer

Is a 2002 mazda millenia car seats compatible with a '97 millenia


This would be an easy question answered by a Mazda dealer. Call the parts department. Most parts stores could answer this for you as well.

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1 Answer

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Try checking your fuses, wiring under the seat.

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My heated seats do not get warm. I checked the wires and it seems their is no power to them. I could not get a test light to light up. The on/off indicator switch does however light up. What is wrong.


since you have sign that the on/off indicator is sending the message,you have then to start checking the wiring system from the indicator to the seats.Somewhere you have either broken or bad conduct wiring.

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1 Answer

How to fix the tilt steering.. won't go down even when you push the auto button. My heated seats ain't workin either..(driver & passenger seat)


Most often, the stuck steering wheel is a result of a faulty 'tilt relay switch.' If you attempt to use the tilt switch and you can hear a clicking/whirring noise, then its your relay switch, if not, it may be the motor that is broken.

Apr 19, 2009 | 1997 Mazda Millenia

1 Answer

Passenger seat won't heat


Hi my name is Allen!

The most probable cause for your problem is the heating grid that is mounted on the set for heating it, it is under the seat cover, the light will act weird because it is not completing the circuit. Raise the seat cover and visually look at it, it should be burnt.

For further asistance you may reach me at FixYa!

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