NHTSA ID Number: 11017186
Manufacturer Communication Number: MAS004672 DS 25-08
TSB/Document Date: 2025-04-24
Summary
This Technical bulletin serves as a guide and provides additional diagnostic info for possible Air suspension issues on Grecale equipped with Air Suspension System. ATTENTION! This bulletin supersedes MAS004471 RU 25-09 released on December 17, 2024. This bulletin has been updated with new diagnostic info. Please discard/remove all copies of the previous
TECHNICAL SERVICE OPERATIONS
MAS004672 DS 25-08
Technical Information
FROM: Maserati
TSO
TO: Maserati Network
Grecale:
Air Suspension System Diagnosis
ATTENTION! This bulletin supersedes MAS004471 RU 25-09 released on December 17, 2024. This bulletin
has been updated with new diagnostic info. Please discard/remove all copies of the previous
bulletin.
DATE: April 4, 2025
This Technical bulletin serves as a guide and provides additional diagnostic info for
possible Air suspension issues on Grecale equipped with Air Suspension System.
MODELS:
•
M182 Grecale(All MY)
The air suspension system is subject to micro air leaks. which are a normal characteristic
of the system. These small leaks typically come from the air springs and components
located at the front of the vehicle. Since these leaks are considered normal, the vehicle's
behavior remains within standard parameters, and no additional checks are required.
When the vehicle is started, the system automatically restores the correct ride height by
compensating for any normal deflation that may have occurred while the car was off.
© 2025 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004672
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 1 of 7
The following indications and criteria for the evaluation of anomalies are no longer valid:
•
•
•
Static lowering over 24h greater than 6mm
Lock-to-Lock manoeuvres and/or low speed steering
Five height level settings from Off-road2 to Aero1 position, to replicate the DTC
If the following cases occur:
A) Suspension warning light OFF: with air suspension leak concern. Inform the customer
that a new VDCM SW will be released soon! The new VDCM SW changes the
compressor blocking strategy in case of temporary air leak when the wheels are
steered. This new strategy will level the vehicle. Therefore, do not proceed with
troubleshooting.
B) Suspension warning light ON: and DTC 55A100 (Unable to Obtain Desired Ride Height in
"ACTIVE" state in VDCM): proceed with the AIR LEAK TROUBLESHOOTING of this bulletin.
For the purpose of investigating the potential cause of the incident and possible
authorisation to repair the air suspension components, perform the AIR LEAK
TROUBLESHOOTING section starting on page 3 and fill out the checklist on page 6,
open a Blue On Line (as Support Request) an attach it with all other required
attachments. Wait for feedback from the Technical Support Team before replacing
any components.
Performing the troubleshooting steps in this bulletin is mandatory. The collected
evidence will be attached to the relevant Blue On Line or possibly to the warranty
claim.
Warranty claims that do not meet the requirements cannot be approved and will be
subject to assessment.
If you are dealing with a case not described in this bulletin, please open a Blue on Line
(as Support Request) explaining the specific problem. Wait for feedback from the
Technical Support Team.
Please see last page of this bulletin for recommended products to use when
checking for air leaks on various air suspension components.
© 2025 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004672
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 2 of 7
TECHNICAL SERVICE OPERATIONS
The information contained in this bulletin supersedes all previous communications on the issue.
The troubleshooting guidelines to be followed to speed up diagnosis to identify the potential source of an
air leak in the system.
Each area described below must be tested for leaks for at least 5-10 minutes with one of the products
listed at the end of this document.
Area 1- Front axle
Example of incorrect installation of air
suspension system pipes on front axle
Example of correct installation to be secured in
the car (points A and B)
The insertion of the pipes into the fittings is correct if only the innermost reference marking (in relation to the
pipe) is visible (see point B in the pictures above).
Area 2 - Rear axle
Zones to be
checked
Example of incorrect installation of air suspension
system lines on rear axle
The insertion of the pipes into the fittings is correct if only the outermost reference marking (in relation to the
pipe) is visible.
© 2025 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004672
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 3 of 7
TECHNICAL SERVICE OPERATIONS
AIR LEAK TROUBLESHOOTING
Area 3
TECHNICAL SERVICE OPERATIONS
Grecale ICE/MHEV pipe junction area
Grecale BEV pipe junction area (checks to be carried out without removing the HV battery)
The insertion of the pipes into the fittings is correct if only the outermost reference marking (in relation to the
pipe) is visible.
Area 4 - Pipes on valve block
Check pipes on valve block for
disconnected and/or incorrectly installed
lines
Use a leak detector to detect potential
air leaks in the system
The insertion of the pipes into the fittings is correct if only the outermost reference marking (in relation to the
pipe) is visible.
Page 4 of 7
© 2025 Maserati North
All rights reserved. Reproduction or translation in
America. Aftersales
whole or in part is not permitted without
www.maseratiusa.com
authorization from the publisher. Printed in USA
MAS004672
TECHNICAL SERVICE OPERATIONS
Area 5 - Shock absorber top mount upper part check
It is normal for bubbles to form in the zone shown in the picture above because the liquid slowly replaces the
air in the top mount seat (releasing bubbles at a low frequency compatible with the progressive filling of the
seat).
Refer to the image above and the videos attached to this bulletin for cases of "Confirmed leaks" and
"Normal operation" (in which case bubbles can still be observed but do not indicate an objective problem).
Area 6 - Compressor
Check all the compressor connections for leaks.
IMPORTANT NOTE: Only in this case, the insertion of the pipes into the compressor connections is correct if
two reference markings are visible.
After carrying out the six checks described above, proceed as follows to ensure the correct investigation
of the root cause of the problem:
•
Do not perform recovery operations and open Blue On Line tickets as a Support Request explicitly
indicating the component on which the fault was found
•
Attach pictures/videos of the anomaly and the checklist at the end of this document. Refer again
to the videos attached to this Bulletin for examples.
Maserati technical support will indicate the operations to be carried out and any parts to be replaced and
returned for analysis.
If a leak on a shock absorber on one of the axles is confirmed, regardless of the mileage of the car, the
other shock absorber installed on the same axle (front or rear) will NOT also need to be replaced.
© 2025 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004672
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 5 of 7
TECHNICAL SERVICE OPERATIONS
Air Suspension Checklist (MAS004672)
Fill out the checklist below and attach it to the BOL
LEAK?
Area
Area Description
YES/NO
Number of reference
markings visible on pipes
Front axle
1
Pipe junction zone
3
Pipes on valve block
4
Shock absorber top mount
N/A
5
Compressor
6
© 2025 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004672
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 6 of 7
•
LEAK TRACING POWDER OR EQUIVALENT
EXAMPLES:
WARRANTY CLAIM INFORMATION
Codes to be used to claim the labor costs under warranty.
Use the following codes depending on the check performed:
Description
Part Number
Component Code
6.90.001
Operation Code
© 2025 Maserati North
America. Aftersales
www.maseratiusa.com
▪
ICE/MHEV leak detection
6.90.001.C (1.50 h)
▪
BEV leak detection
6.90.001.D (2.00 h)
MAS004672
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 7 of 7
TECHNICAL SERVICE OPERATIONS
Products to be used when inspecting for any leakage in the air suspension system.
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TSB/Document ID: MAS004672 DS 25-08
Replacement Service Bulletin Number:
MFR Communication Date: 2025-04-04
MFR Internal Campaign ID/Software Version:
Communication Type: Other
NHTSA Components: SUSPENSION
MFR Component System:
MFR Component Subsystem:
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