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Discussion Starter · #1 · (Edited)
So my 2017 Touring L Plus with Advanced SafetyTec which has about 24,000 miles recently started blowing hot air occasionally. Took it to the dealership and they got an active code when they ran diagnostics - P1009 (humidity sensor). Turns out this will cost me about $480 to have the dealer replace the humidity sensor. They are apparently back ordered and it will take them about a month to get it.

Has anyone here successfully replaced it themselves? I couldn’t find a YouTube video specifically for the Pacifica showing the location and the replacement. I assume it is one of the sensors that is mounted on the front windshield. I found some videos for the 300 and for Dodge Charger that appear to be similar issues when searching on google.

Trying to see under which cover it would be and how to open said cover without breaking it. Ha ha.
 

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So my 2017 Touring L Plus with Advanced SafetyTec which has about 24,000 miles recently started blowing hot air occasionally. Took it to the dealership and they got an active code when they ran diagnostics - P1009 (humidity sensor). Turns out this will cost me about $480 to have the dealer replace the humidity sensor. They are apparently back ordered and it will take them about a month to get it.

Has anyone here successfully replaced it themselves? I couldn’t find a YouTube video specifically for the Pacifica showing the location and the replacement. I assume it is one of the sensors that is mounted on the front windshield. I found some videos for the 300 and for Dodge Charger that appear to be similar issues when searching on google.

Trying to see under which cover it would be and how to open said cover without breaking it. Ha ha.
Yes, that code does refer to the humidity sensor on the windshield. I believe the humidity sensor is shown in your first picture. However, what is shown in your pictures looks different than what's in our van and what is illustrated in All Data (pictures below). The components in your van appear to be oriented in the opposite manner (sensor to left of the mirror instead of the right). This is probably because your van is equipped with Advanced SafetyTec (ours isn't). All Data says the humidity sensor is located to the right of the rearview mirror (as it is in our van), but doesn't make any distinction between models with or without Advanced SafetyTec. I suspect this is simply an oversight.
Hand Jaw Gesture Font Slope

Mirror Automotive parking light Automotive mirror Automotive side-view mirror Automotive lighting
 
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Discussion Starter · #4 ·
Yes, that code does refer to the humidity sensor on the windshield. I believe the humidity sensor is shown in your first picture. However, what is shown in your pictures looks different than what's in our van and what is illustrated in All Data (pictures below). The components in your van appear to be oriented in the opposite manner (sensor to left of the mirror instead of the right). This is probably because your van is equipped with Advanced SafetyTec (ours isn't). All Data says the humidity sensor is located to the right of the rearview mirror (as it is in our van), but doesn't make any distinction between models with or without Advanced SafetyTec. I suspect this is simply an oversight.
View attachment 51749
View attachment 51750
Thank you! What do the numbers in your diagram correspond to? Is that the order in which the cover needs to be removed or something else? Happy Thanksgiving!
 

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Thank you! What do the numbers in your diagram correspond to? Is that the order in which the cover needs to be removed or something else? Happy Thanksgiving!
The numbers simply point out items as they are mentioned in the instructions. Removing the cover looks pretty straightforward. I've posted the instructions below. All Data says the part number for the humidity sensor is 68440808AA. Online parts diagrams show the same part number so I'm assuming all vans use the same part regardless of whether or not they're equipped with Advanced SafetyTec.

REMOVAL
  1. Disconnect and isolate the negative battery cable. If equipped with an Intelligent Battery Sensor (IBS), disconnect the IBS connector first before disconnecting the negative battery cable.

    CAUTION:
    Use care when removing the humidity sensor cover. The humidity sensor bracket cannot be serviced separately from the windshield. If the sensor bracket becomes damaged, the windshield will need to be replaced.


  2. (Cover removal - refer to Figure 1.) Carefully disengage the four retaining tabs (2 and 4) that secure the cover (3) to the humidity sensor bracket (1) by pressing in on the right side of the cover, while rocking the left side of the cover off the bracket.

    Figure 1
    Hand Jaw Gesture Font Slope


    CAUTION:
    Use care when removing the humidity sensor. The humidity sensor bracket cannot be serviced separately from the windshield. If the sensor bracket becomes damaged, the windshield will need to be replaced.


  3. (Humidity sensor removal - refer to Figure 2.) Using a small screwdriver or similar tool, carefully disengage the metal retaining clip (3) from the sensor bracket (2) and remove the humidity sensor (4) and the clip as an assembly.
  4. Disconnect the wire harness connector (1) from the humidity sensor.
  5. If the humidity sensor bracket is damaged and cannot be reused, replace the windshield.

    Figure 2
    Triangle Slope Font Parallel Auto part


INSTALLATION
  1. (Humidity sensor installation - refer to Figure 2.) If the humidity sensor bracket (1) is damaged and cannot be reused, install a new windshield.
  2. Connect the wire harness connector (1) to the humidity sensor (4).

    CAUTION:
    Use care when installing the humidity sensor. The humidity sensor bracket cannot be serviced separately from the windshield. If the sensor bracket becomes damaged, the windshield will need to be replaced.


  3. Position the humidity sensor to the sensor bracket (2) and engage the metal retaining clip (3) to the bracket. Make sure both sides of the retaining clip are fully engaged to the bracket.

    CAUTION:
    Use care when install the humidity sensor cover. The humidity sensor bracket cannot be serviced separately from the windshield. If the sensor bracket becomes damaged, the windshield will need to be replaced.


  4. (Cover installation - refer to Figure 1.) Carefully install the humidity sensor cover (3) onto the sensor bracket (1). Make sure the four retaining tabs (2 and 4) are fully engaged to the bracket.
  5. Connect the negative battery cable. If equipped with an Intelligent Battery Sensor (IBS), connect the IBS connector to the negative battery cable.
 
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Discussion Starter · #6 ·
Thank you so much @freddief73 !

I have been trying since this morning to take off the plastic cover but no success so far. I am trying it gently so that I don't break it apart.
 

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Discussion Starter · #7 ·
Found this link with detailed instructions if someone else finds this thread in the future. I haven't been able to get the cover off yet (since I am paranoid that I will mess it up and will need bigger repairs), but I still can't get myself to shell out $480 for a $65 part replacement. :)
 

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Discussion Starter · #9 ·
I tried it with my hands - but there is no real place to grip. So tried with a flat head screwdriver but ended up scratching the cover a little. There are two “vent” like opening on one side (the right side I guess) and there is larger opening at the top left. I feel the cover giving more on its left side when I put the flat head screwdriver through that larger opening but worried that if I twist or try too much force it may damage the windshield somehow.
 

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I actually removed this cover before.

You need a small hook tool to reach around the plastic cover. You can't really depress the tabs, the plastic cover snaps over the metal tabs and needs to be "stretched" over. Then you can access the sensor itself. To remove the sensor itself, you will need to pry on the metal tabs of the sensor to remove it. It took me a few minutes to remove the first time.

FYI, I don't believe I have any codes active, but my HVAC in auto mode randomly kicks me out of recirc mode, and sometimes the recirc button just blinks and wont enable. This prevents the air from getting cold enough when it's really hot out. In manual AC mode it works normally. This seems to be a well documented problem with other dodge/chrysler/jeep products that use the exact same part.

I found that tapping on the sensor seems to make it work for a while. I will be replacing the sensor soon.
 

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Discussion Starter · #14 ·
Thanks, simo10. I am waiting on the new sensor and some pry tools to get to me before trying again. Just worried to put too much pressure on that small plastic cover - worried that I will damage the windshield.
 

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Thanks, simo10. I am waiting on the new sensor and some pry tools to get to me before trying again. Just worried to put too much pressure on that small plastic cover - worried that I will damage the windshield.
I used a hook tool like this. Place it around the plastic cover right by the tab and pull out and down. Do one side at a time. You barely need to touch the windshield.
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Discussion Starter · #17 ·
Also, $480 for the dealer to replace this sensor???? Its a 10 min job with a $50 part, wtf :ROFLMAO:
I know! I am willing to pay a reasonable labor cost for replacing a $60 to $70 part - and especially since it doesn't involve getting into the engine block or anything like that. But $400 seemed a bit excessive. LOL.

P.S. the same dealers want $60 to replace the cabin air filter (that costs about $10-$12 for the part).
 
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