Need to discharge rear air suspension

If you have a scan tool you can deflate the system. I attached the process.

If not then look at number two you will see the air spring. It will have an air line going to it. I would just support frame of the vehicle with a jack and remove the air line. Clearly you will get a burst of air but if the vehicle is supported with a jack, it won't drop when you remove it. Just make sure you turn the air suspension switch off so that the compressor doesn't run to try and fill the system.

Let me know if you have questions. Thanks

Good evening,

If I can throw in my 2 cents, removing the line can release a lot of pressure.

If you jack the car up in the front with the key off, the vent solenoids will open and exhaust the air.

Do the same to the rear and then they will all be free of air.

I always err on the side of caution.

Roy

Okay, disconnect the height rod at the rear and move it up and down and see if it opens the solenoids.

Be careful if you are under it.

I attached a picture of it for you.

Roy

Understood. Just to be clear, if you have the vehicle supported then it is just releasing the air from the top of the spring. Clearly if the vehicle is sitting on the suspension and you do it, it will drop. However, I get how you may not want to do it this way.

If you release the rod as Roy stated, just try to support the vehicle as well. As he stated, you need to be careful if you are doing it on the ground and you are under it. No matter what you do, just make sure you have it supported so that you can control the drop of the vehicle while you are out from under it.

Let us know how you make out. Thanks

This will not be easy as the system is always set to default and the light will come on. Disconnecting fuses will not do it as other systems are tied into the fuses as well.

The only way to do it is to remove the cluster and remove the bulb. There will always be codes set for the suspension.

I attached the procedure and some pictures for you.

Roy

INSTRUMENT CLUSTER

Removal and Installation

All vehicles

CAUTION: Electronic modules are sensitive to electrical charges. If exposed to these charges, damage may result.

1. NOTE: Prior to removal of the instrument cluster, it is necessary to upload the instrument cluster configuration information to the diagnostic tool.

Depower the supplemental restraint system.

2. Remove the instrument panel finish panel.

Expedition

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3. Remove the screws and pull the instrument cluster out from the instrument panel.

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4. Remove the instrument cluster.
Press the retaining tabs, remove the transmission range selector, and position aside.
Disconnect the electrical connectors.

Navigator

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5. Remove the 4 screws and pull the instrument cluster out from the instrument panel.

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6. Disconnect the electrical connectors and remove the instrument cluster.

All vehicles
7. To install, reverse the removal procedure.
Download the instrument cluster configuration information from the diagnostic tool into the new instrument cluster.