TECHNICAL SERVICE OPERATIONS

MAS003662 MTB 23-05
Technical Info
FROM: Maserati TSO
TO: Maserati Network

Grecale - New Granturismo:
air suspension system check

DATE: JULY 11, 2023
The Maserati Grecale and the 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 base of the speed to reduce aerodynamic resistance and improve stability and 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 case 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 axle.
On Grecale, the lowering of the vehicle body allows all passengers to enter and exit the vehicle comfortably
when the vehicle is parked.
The purpose of this information is to provide guidance and help to identify potential air leaks in the system.

Please read and review this bulletin first before starting the procedure.
Contact your Regional AfterSales Manager (RAM) or the Technical Support Helpdesk if you have any
questions. ([email protected])
Thank You for your continued support and cooperation.
Maserati Americas
Aftersales Dept.

© 2023 Maserati Americas
Aftersales
www.maseratiusa.com

MAS003662

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whole or in part is not permitted without
authorization from the publisher. Printed in USA

1

The air suspension system is subject to air micro-leaks which are physiological of the system and 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 area of
the vehicle and due to the presence of John Guest” intermediate joints.
In the case of the vehicle lowering while it is parked, it is necessary to carry out the check listed below:
Pre-conditions:
•

position the vehicle in the area where it will be parked for 24 hours (smooth and flat support
surface); from now on, 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 and keep it out of the vehicle.

•

no passenger and/or control operator and no load must be in the vehicle; the vehicle weight
must no longer be changed within 24 hours; therefore, no equipment must be in the vehicle.

•

always keep the doors closed and the window opened to connect/disconnect the OBD
diagnostic tool (don’t sit in the vehicle)

•

before starting the procedure, wait until the vehicle is in "cold engine” condition - a change of
the temperature on the spring can impact the vehicle alignment measurements.

1.

Connect the EVO to the vehicle through the window opened (doors closed)

2.

check the pressure of the four tires from the vehicle cluster or the EVO in RFHM ECU and indicate the
values in the checklist at the end of section 1 of the bulletin.

3.

check with the diagnostic tool the presence of any stored DTC; in case of any DTC, do a complete
scan report of all the control units and then cancel all the DTCs.

4.

check that it is not active:
a) the Shipping condition or the Lifter condition (the Lifter condition only for the New
Granturismo)
b) the convergence/tire check mode

5.

carry out the following operations:
a) with the EVO, 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 of the highest point of each front wheel arch (height) with
the diagnostic tool in VDCM ECU - 7005 - Vertical Dynamic Ride Height Sensors – and indicate
the values in the checklist at the end of section 1 of the bulletin.
c) run the "Get Out of In-Plant Mode" routine.
d) check the absence of the DTC C2212-00 “ECU In Plant Mode” in ECM
e) if the DTC C2212-00 is stored, run again the "Get Out of In-Plant Mode" routine in ECM.
f)

disconnect the OBD tool through the window opened (doors closed)

6.

Measure the height from the ground to the highest point of each front wheel arch (Figure 1) and
indicate the values in the checklist at the end of section 1. Figure 1

7.

wait 6 hours.

© 2023 Maserati Americas
Aftersales
www.maseratiusa.com

MAS003662

All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA

2

TECHNICAL SERVICE OPERATIONS

Section 1: Standard vehicle lowering while it is parked.

Measure the height from the ground to the highest point of each front wheel arch (Figure 1) again
and indicate the values in the checklist at the end of section 1.

9.

connect the EVO to the vehicle through the window opened (doors closed, don’t sit in the vehicle)

TECHNICAL SERVICE OPERATIONS

8.

10. check the pressure of the four tires from the vehicle cluster or the diagnostic tool in RFHM ECU and
indicate the values in the checklist at the end of section 1 of the bulletin.
11. read the height from the ground of the highest point of each front wheel arch (height) with the
diagnostic tool in VDCM ECU - 7005 - Vertical Dynamic Ride Height Sensors – and indicate the values
in the checklist at the end of section 1 of the bulletin.
12. Run the "Get Out of In-Plant Mode" routine.

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.
Repeat the procedure after 24 hours and indicate the values in the checklist at the end of section 1.
If the checks carried out show that the lowering of the vehicle is less than 6 mm, the vehicle can be
leveled and considered compliant with the standards.
If the checks carried out show that the lowering of the vehicle is greater than 6 mm, the opening of a BOL
(As support Request) is required; indicate the results of the measures carried out in the points listed above.

Figure 1

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Aftersales
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MAS003662

All rights reserved. Reproduction or translation in
whole or in part is not permitted without
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3

Fill in the checklist with all the required information.
YES
1

Check the vehicle with the MD
EVO tool: is any DTC stored?

2

Are the conditions

TECHNICAL SERVICE OPERATIONS

Preliminary information
NO

4a) and 4b) satisfied?
3

Is the routine executed
from 5c) to 5f)?

height - mm
After 6 hours
Point 6

Point 8

After 24 hours
Point 6

Point 8

Front Left
Front Right
Rear Right
Rear Left

Tires pressure – bar
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

© 2023 Maserati Americas
Aftersales
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MAS003662

After 24h
Point 11

Point 5b

Point 11

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4

In this document, you can find the diagnostic guidelines to speed up the diagnosis to identify the potential
source of air leakage in the system.
The following check must also be executed in the case that there isn’t any DTC stored and/or in the case
that there isn’t any warning light in the IPC.
Potential DTC stored:
VDCM (1541) - Vehicle Dynamics Control Module: 55A100 - Unable to Obtain Desired Ride Height
Potential warning light in the 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

© 2023 Maserati Americas
Aftersales
www.maseratiusa.com

MAS003662

All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA

5

TECHNICAL SERVICE OPERATIONS

Section 2: Abnormal lowering while parked – possible air leakage in the system.

TECHNICAL SERVICE OPERATIONS

3a – Pipes connection area – Grecale (check the connections with soapy water for 5 minutes)

Air suspension
pipes connection
area

3b – Pipes connection area – Granturismo (check the connections with soapy water for 5 minutes)

For the Granturismo, follow the instructions related to inspection points and fill in the specific checklist that
you find in the final section of this document.
4 – Air Valves Block pipes – disconnected or wrongly fitted

Check the air valves block pipes to
ensure that there isn’t any disconnected
and/or wrongly installed line.

© 2023 Maserati Americas
Aftersales
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MAS003662

Use soapy water to detect potential air
leak through the system.

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whole or in part is not permitted without
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6

To guarantee the correct investigation of the root cause of the problem, if you detect any leakage in the
system, it is requested (for the next two months starting from the date of this publication) to:
TECHNICAL SERVICE OPERATIONS

• 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.

Inspection points for the New Granturismo

© 2023 Maserati Americas
Aftersales
www.maseratiusa.com

MAS003662

All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA

7

TECHNICAL SERVICE OPERATIONS

© 2023 Maserati Americas
Aftersales
www.maseratiusa.com

MAS003662

All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA

8

TECHNICAL SERVICE OPERATIONS

© 2023 Maserati Americas
Aftersales
www.maseratiusa.com

MAS003662

All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA

9

TECHNICAL SERVICE OPERATIONS

© 2023 Maserati Americas
Aftersales
www.maseratiusa.com

MAS003662

All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA

10

TECHNICAL SERVICE OPERATIONS

Fill in the inspection point checklist.

LEAK?
AREA

#
YES/NO

INS.
«I»
1 OR 2

1A
2A
FL

3A
1F
1B
2B

FR

3B
2F
4A

RL

5A
1C
4B

RR

5B
1D
2D
2C
4A
4B

COM

1E
2E
3E
4E

© 2023 Maserati Americas
Aftersales
www.maseratiusa.com

MAS003662

All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA

11