S1723000007

STAR Case
Case Number: S1723000007
Release Date:
05/04/2020
Symptom/Vehicle Issue: Air Suspension Inoperative And Or Compressor Freeze Up
Or Sticking In Cold Weather.
Discussion:
Inspect air suspension fuse for an open. Is the fuse open?
>>> Yes.
1. Replace the compressor Fuse only, not the compressor unit.
2. Deflate the system to ambience - This will purge the air drier
3. Fill only the reservoir with Nitrogen using the service manual procedure.
4. Perform 3 partial deflations of the reservoir using WiTECH (this will will help pull
humidity from the system).
5. Follow service manual procedure to fill the system with Nitrogen
6. Perform a leak test. Provide us details & make sure of the below
A. Put the system in Off road 2 (Off Road position for Rebel trucks)
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Center
Online does not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear
to be similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.
Contact STAR Center, or your Technical Assistance Center Via ECCI or eCONTACT ticket if no solution is found
FCA US LLC
Version 4.1 01/13/2015
STAR Case
B. Record pressure/airmass at this point
C. Place the system in plant mode to disable auto leveling and ascm operation.
To accomplish this start any ascm routine and cancel out before completing. The plant
mode fault will be active (c2212). Leave the vehicle for 2 hours & compare the
readings taken in step B. This will help in identifying the corner which may have
leaked.
D. Remove vehicle from plant mode by completing any ASCM misc function
routine (such as Air Mass check).
*** NOTE *** Highest suspension height is typically used for leak testing but it
may be necessary to leak test in lower positions to duplicate a leak.
5. Verify the intake air house routing is facing downwards, preventing the collection of
water/snow.
>>> No. Fuse is not blown. Follow diagnostics for any active DTC’s. If no DTC’s exists,
perform a suspension test by operating the system through each position.
NOTE- Compressor and individual service parts have been updated. Always refer to
STAR Parts for most recent part information. Several improvements are on the latest
level parts.
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Center
Online does not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear
to be similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.
Contact STAR Center, or your Technical Assistance Center Via ECCI or eCONTACT ticket if no solution is found
FCA US LLC
Version 4.1 01/13/2015