GX - 1st Gen (2003-2009) Discussion topics related to the 2003 -2009 GX470 models

G (Up&Down) Sensor

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Old 08-23-19, 07:08 AM
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gwebster
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Default G (Up&Down) Sensor

Does anyone know how the G Sensors identified in the Air Suspension tab of Techstream interact with the air suspension? There are 3 sensors identified and the one identified as Front Right is always significantly lower than front left and the rear sensor on my GX470. I have read that G Sensors interact with skid control, but I am wondering if it is used to send info to rear air suspension or the AVS shocks. I still have factory air and shock setup, but the ride quality seems to vary every time when I’m the vehicle and I am wondering if It is related to G sensors. I already replaced height control sensors, shocks, and air bags. Any info on this subject would be appreciated!
Old 08-23-19, 04:00 PM
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chiph9
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I doubt they interact with the air suspension. There is no left/right front/back suspension compensation like there would be on a Mercedes Active Body Control system. (recall that the GX is, at it's heart, a truck)

They will send data to the stability system and airbag controller (rollover detection, imminent crash detection).

Chip H.
Old 08-23-19, 04:06 PM
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Because they're too good not to share. Mercedes' ad for their Magic Body Control, followed by Jaguar's response.

Chip H.


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Old 08-26-19, 04:02 PM
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gwebster
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Originally Posted by chiph9
I doubt they interact with the air suspension. There is no left/right front/back suspension compensation like there would be on a Mercedes Active Body Control system. (recall that the GX is, at it's heart, a truck)

They will send data to the stability system and airbag controller (rollover detection, imminent crash detection).

Chip H.
Thanks for the response Chip. I just noticed in techstream that under the “Air Suspension” tab that it says “this ECU controls suspension and absorber actuators based on wheel speed, steering wheel rotation, and G Force. It makes it sound as if there is some interaction- Maybe it communicates with the AVS? I noticed the damper values change constantly while driving, but it is not clear to me what information is used to make the adjustments. If anyone else has techstream I would be curious to know if your GForce readings are aligned when the vehicle is level.
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