MAS003848

TECHNICAL SERVICE OPERATIONS
MAS003848 BOL 24-02
Diagnostic Sheet
FROM: Maserati TSO
TO: Maserati Network
Grecale: Checks for TPMS and/or
Keyfob Recognition Issues
DATE: JANUARY 31, 2024
This document aims to provide technical indications for the diagnosis of TPMS and/or keyfob
recognition anomalies.
MODEL: Grecale (All MY)
CUSTOMER CONCERN:
A) TPMS warning light on and pressure value of one or more tires is not displayed.
B) Difficulty locking and unlocking the doors, even at close range (less than 6 meters).
C) “Insufficient tires pressure” warning on cluster, even though the pressure displayed is correct.
D) “Keyfob not detected” warning on cluster (after opening and closing the driver's door).
ACTION:
Perform checklists A/B depending on the customer complaint. We inform you that, regarding
points C and D, resolution update campaigns have been released (RU 673 and RU 674,
respectively). If the customer reports one or both problems of points C and D, check whether
the car is involved in the aforementioned campaigns. If so, follow the instructions reported in
the respective bulletins.
CHECKLIST A:
1) Save a full ECU scan report;
2) Check if the vehicle is equipped with OPT 35B (21’’ CRIO STAGGERED ALLOY FRONT WHEEL:
255/40 REAR: 295/35 SUMMER CLASS C) AND Bridgestone tires. In this case, write down the
DOT code of the tires and check if they are the ones installed as original equipment or if
they were installed after the vehicle sale;
3) If the customer's complaint is easily duplicable, electrically disconnect all connectors of the
central infotainment display (ICS, see section Modis 08.71 – 1, item n.1). Subsequently, check
whether the complaint is still present. Document the behavior of the car with a video.
4) If the problem persists even after ICS disconnection or if it is not possible to replicate the
customer's complaint, we inform you that a kit will soon be made available for repositioning
the RFHM antenna in the central area of the roof top. This solution will guarantee an
improvement in system performance, avoiding the recurrence of the problem. It is therefore
requested not to carry out further interventions on the car, and to open a BOL as "factory
information", reporting the results of the diagnosis.
© 2024 Maserati North America
Aftersales
www.maseratiusa.com
MAS003848
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
1
1) Save a full ECU scan report.
2) Check locking/unlocking of the doors by pressing the relevant button on the keyfob, at a
distance of 6 meters. Document the behavior of the car with a video.
3) Check whether it is possible to switch the ignition to RUN with the keyfob positioned on the
front passenger seat. Document the behavior of the car with a video.
4) Carry out what is reported at point 5 of checklist A.
5) If the problem persists even after ICS disconnection or if it is not possible to replicate the
customer's complaint, we inform you that a kit will soon be made available for repositioning the
RFHM antenna in the central area of the roof top. This solution will guarantee an improvement
in system performance, avoiding the recurrence of the problem. It is therefore requested not to
carry out further interventions on the car, and to open a BOL as "factory information", reporting
the results of the diagnosis.
© 2024 Maserati North America
Aftersales
www.maseratiusa.com
MAS003848
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
CHECKLIST B: