NHTSA ID Number: 11000468
Manufacturer Communication Number: MAS004068 MTB 24-19
TSB/Document Date: 2024-05-28
Summary
The Maserati Grecale and New Granturismo offer an air suspension system (standard equipment on all versions for New Granturismo and OPT for Grecale) that improves the ride, comfort, and the vehicle handling in all conditions to maximize the Maserati
driving experience.
TECHNICAL SERVICE OPERATIONS
MAS004068 MTB 24-19
Technical Information
FROM: Maserati TSO
TO: Maserati Network
Grecale - New Granturismo:
air suspension system check
DATE: May 1, 2024
The Maserati Grecale and New Granturismo offer an air suspension system (standard equipment
on all versions for New Granturismo and OPT for Grecale) that improves the ride, comfort, and
the vehicle handling in all conditions to maximize the Maserati driving experience.
This system has many advantages, including the possibility of lowering the vehicle height
automatically on the basis of the speed to reduce aerodynamic resistance, improve stability, and
improve handling.
The system also offers the possibility to increase the height of the vehicle from the ground in
particular maneuvers such as overcoming any obstacles on the road surface and, for Grecale,
in the cases of offroad conditions.
The system also makes it possible to automatically keep the vehicle body level regardless of any
load variations on both the front and the rear axles.
On Grecale, the lowering of the vehicle body allows all passengers to enter and exit comfortably
when the vehicle is parked.
The purpose of this information is to guide in diagnosis and identify potential air leaks in the system.
Please do not hesitate to contact us for any questions you may have.
Kind regards,
TECHNICAL SERVICE OPERATIONS
© 2024 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004068
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 14
The air suspension system is subject to air micro-leaks which could occur particularly on the springs and on
the components installed in the front part of the vehicle due to the greater distance from the compressor
and the valve unit which are installed in the rear of the vehicle and due to the presence of “John Guest”
intermediate joints.
In the case of vehicle lowering while it is parked, it is necessary to carry out the checks listed below:
Pre-conditions:
•
position the vehicle in the area where it will be parked for 24 hours (smooth and flat surface); from
there, the vehicle must not be moved for 24 hours
•
the engine must be off and must not be started again within 24 hours
•
use a battery maintainer
•
no passengers and no loads must be in the vehicle; the vehicle weight must not be changed
within 24 hours, therefore no equipment must be in the vehicle
•
always keep the doors closed and the driver window open to connect/disconnect the scan tool
(don’t sit in the vehicle)
•
before starting the procedure, wait until the vehicle is in a "cold engine” condition - a change of
the temperature on the spring can impact the vehicle’s alignment
1.
connect the scan tool to the vehicle through the open window (doors closed)
2.
check the pressure of all four tires from the vehicle cluster/IPC or from the scan tool in RFHM ECU and
indicate the values in the check list table at the end of section 1 in the bulletin
3.
with the scan tool check for the presence of any stored DTC’s; in case of any DTC’s, do a complete
PDF scan report of all the control units and then delete all the DTC’s
4.
verify that the following items are not active:
a) vehicle in ship mode or the lifted condition (the Lifter condition is only for the New
Granturismo)
b) tire jack mode
5.
carry out the following operations:
a) with the scan tool take the vehicle to the Normal height (use the “leveling to set level”
command that must end with a positive result)
b) read the height from the ground to the highest point of each front wheel arch
(borlotto height – see image on page 3 of pdf for clarification) with the scan tool in VDCM
ECU - 7005 - Vertical Dynamic Ride Height Sensors – and indicate the values in the check list
table at the end of section 1 of the bulletin
c) execute the "Get Out of In - Plant Mode" routine with the scan tool and make sure it ends
successfully
d) verify DTC C2212-00 “ECU In Plant Mode” in ECM is no longer present
e) if the DTC C2212-00 is stored, run the "Get Out of In-Plant Mode" routine in ECM again
f)
disconnect the scan tool through the open window (doors closed)
6.
measure the vehicle height from the ground to the highest point of each front wheel arch and
indicate the values in the check list table at the end of section 1 of the bulletin
7.
wait 6 hours
8.
measure the height from the ground to the highest point of each front wheel arch and indicate the
values in the check list table at the end of section 1 of the bulletin
© 2024 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004068
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 14
TECHNICAL SERVICE OPERATIONS
Section 1: Standard vehicle lowering while it is parked
connect the scan tool to vehicle through the open window (doors closed, don’t sit in the car)
10. check the tire pressures from the vehicle cluster/IPC or from the scan tool in the RFHM ECU and
indicate the values in the check list table at the end of section 1 of the bulletin
11. read the height from the ground to the highest point of each front wheel arch with the scan tool in
VDCM ECU - 7005 - Vertical Dynamic Ride Height Sensors – and indicate the values in the check list
table at the end of section 1 of the bulletin
12. Run the "Get Out of In-Plant Mode" routine and make sure it ends successfully
Compare the measures at pt.6 and pt.8 → on each corner the difference must be smaller than 6mm
Compare the measures at pt.5b and pt.11 → on each corner the difference must be smaller than 6mm
Remember that the values read in the points above may have a difference between them.
If the difference between the measurements at point 6 and point 8:
•
is greater than 6 mm, the opening of a BOL is required; indicate the values in the check list table at
the end of section 1 of the bulletin.
•
is less than 6 mm, don’t level the car and repeat the procedure from point 1 to point 6 after 24
hours.
If the total lowering of the vehicle after 24 hours (difference between the height value at point 6 and the
height value at point 6 after 24 hours):
•
is greater than 6 mm, the opening of a BOL is required; indicate the values in the check list table
at the end of section 1 of the bulletin.
•
is less than 6mm, then the car can be leveled and considered compliant with standards.
Fill in the check list with all the required information
Preliminary information
YES
1
Check the vehicle with the MD
EVO tool: is any DTC stored?
2
Are the conditions
NO
4a) and 4b) satisfied?
3
Is the routine executed
from 5c) to 5f)?
© 2024 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004068
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 14
TECHNICAL SERVICE OPERATIONS
9.
After 6 hours
Point 6
TECHNICAL SERVICE OPERATIONS
Borlotto height - mm
After 24 hours
Point 8
Point 6
Front Left
Front Right
Rear Right
Rear Left
Tires pressure – indicate bar or psi
After 6h
Point 2
Front Left
0129 – Tire 1 (Left Front)
Altitude Compensated
Pressure
Front Right
012A – Tire 2 (Right Front)
Altitude Compensated
Pressure
Rear Right
012B – Tire 3 (Right Rear)
Altitude Compensated
Pressure
Rear Left
012C – Tire 4 (Left Rear)
Altitude Compensated
Pressure
Point 10
After 24h
Point 2
Point 10
Vehicle height – mm
After 6h
Point 5b
Front Left
Front Left Ride Height
Sensor
Front Right
Front Right Ride Height
Sensor
Rear Right
Rear Right Ride Height
Sensor
Rear Left
Rear Left Ride Height
Sensor
© 2024 Maserati North
America. Aftersales
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MAS004068
After 24h
Point 11
Point 5b
Point 11
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Page 4 of 14
In this section you can find the diagnostic guidelines to identify the potential source of air leakage in the
system.
The following checks must be executed in the situation that there are no DTC’s stored and/or in the case
that there are no warning lights in the cluster/IPC.
Potential DTC stored:
VDCM (1541) - Vehicle Dynamics Control Module: 55A100 - Unable to Obtain Desired Ride Height
Potential warning light in the cluster/IPC:
1 – Front axle
Sample of incorrect Air Suspension pipe
installation on the front Air spring
Correct layout to be ensured on the vehicle
(points A and B)
2 – Rear axle
Sample of incorrect Air Suspension pipe installation
on the Rear Air Spring
© 2024 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004068
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 14
TECHNICAL SERVICE OPERATIONS
Section 2: Anomalous car lowering while parked – air leakage in the system
TECHNICAL SERVICE OPERATIONS
3a – Pipe connection area – Grecale (check the connections for at least 5-10 minutes with one of the
products indicated at the end of this document)
Air suspension
pipes connection
area
3b – Pipe connection area – New Granturismo (check the connections for at least 5-10 minutes with one of
the products indicated at the end of this document)
© 2024 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004068
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 14
4 – Air Valves Block pipes – disconnected or wrongly fitted (check the connections for at least 5-10 minutes
with one of the products indicated at the end of this document)
Check the air valves block pipes to
ensure that there isn’t any disconnected
and/or wrongly installed line
Use soapy water to detect potential air
leak through the system
5- Front shock absorbers – air leakage while steering
To check for any air leakage from the front shock absorbers, carry out the following maneuver with the car
parked on a flat surface.
Turn the steering wheel completely to the left (full lock position), hold the steering wheel in this position for
30 seconds and check for any sudden lowering of the front part of the car or audible leak.
Straighten the steering wheel and wait for the vehicle to level
Repeat the operation by activating the steering wheel completely to the right (full lock position), hold the
steering wheel in this position for 30 seconds and check for any sudden lowering of the front part of the car
or audible leak
If the car does not lower, repeat the same maneuvers on a slightly sloping road and check for any sudden
lowering of the front part of the car or audible leak
NOTE: THE HEIGHT LOWERING CHECK MUST BE PERFORMED WHEN THE WHEELS ARE FULLY TURNED.
DURING THE STEERING LOCK MANUVEUR THERE IS A LEVELING OF THE VEHICLE DUE TO THE SUSPENSION
GEOMETRY – IT MUST NOT BE CONFUSED WITH A LOWERING OF THE VEHICLE.
To guarantee the correct diagnosis and the root cause of the problem, should you detect any leakage in
the system, it is requested (for the next two months starting from the date of this publication) to:
• don’t perform any restore operation
• open a BOL ticket reporting the detected anomaly
• indicate the area in which the anomaly was detected
• attach images/videos of the anomaly
Maserati technical support will indicate the operations to be performed and the eventual parts that must
be replaced and returned for analysis.
© 2024 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004068
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 14
TECHNICAL SERVICE OPERATIONS
For the New Granturismo, follow the instructions related to inspection points and fill in the specific check list
table that you find in the final section of this document.
TECHNICAL SERVICE OPERATIONS
Inspection points for New Granturismo
© 2024 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004068
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 8 of 14
TECHNICAL SERVICE OPERATIONS
© 2024 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004068
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 9 of 14
TECHNICAL SERVICE OPERATIONS
© 2024 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004068
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 10 of 14
TECHNICAL SERVICE OPERATIONS
© 2024 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004068
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 11 of 14
TECHNICAL SERVICE OPERATIONS
© 2024 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004068
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 12 of 14
LEAK?
AREA
#
YES/NO
INS.
«I»
1 OR 2
1A
2A
FL
3A
TECHNICAL SERVICE OPERATIONS
Fill in the check list related to the inspection points
1F
1B
2B
FR
3B
2F
4A
RL
5A
1C
4B
RR
5B
1D
2D
2C
4A
4B
1E
COM
2E
3E
4E
5E
Compressed
air tank
© 2024 Maserati North
America. Aftersales
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MAS004068
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 13 of 14
•
Kemper 1726 revel gas
•
Arexons System LD214 gas leak detector
•
1000 Bulles Air Liquide gas leak detector
TECHNICAL SERVICE OPERATIONS
Products to be used to check for any leakage in the air suspension system.
Codes to be used to claim the labor costs under warranty.
Use the following codes to request the labor costs under warranty depending on the check performed:
•
Section 1: 6.24.000.A for both models (0.85 hours)
Section 2: 6.24.000.B for both models (in this case the time will automatically differ
depending on the model: 1.6 hours for Grecale – 2.3 hours for Granturismo).
© 2024 Maserati North
America. Aftersales
www.maseratiusa.com
MAS004068
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
Page 14 of 14
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TSB/Document ID: MAS004068 MTB 24-19
Replacement Service Bulletin Number:
MFR Communication Date: 2024-05-01
MFR Internal Campaign ID/Software Version:
Communication Type: Other
NHTSA Components: SUSPENSION
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