NHTSA ID Number: 10240813
Manufacturer Communication Number: MAS003644
TSB/Document Date: 2023-08-21
Summary
Rapid Update 646 to verify the integrity of the wiring of the external side mirror.
TECHNICAL SERVICE OPERATIONS
MAS003644 RU 23-35
RAPID UPDATE
FROM: Maserati TSO
TO: Maserati Network
Rapid Update 646
MC20 & MC20 Cielo – Check side mirrors
DATE: JULY 24 2023
Certain Maserati MC20 and MC20 Cielo (M240) MY23 listed in MODISCS+ are involved in a Rapid Update
to verify the integrity of the wiring of the external side mirrors.
Due to an assembly problem, it is possible that on some cars the internal wiring to the external rearview
mirror may have been pinched. In the long run, this can lead to deterioration of the wiring and lead to
malfunctions in the mirror movement system.
We remind you that all the Rapid Updates must be performed within the first workshop visit, regardless of
the Mandatory setting set in Modis, as required by Maserati
policies.
Also, for vehicles in Stock Dealer / PDI, it is necessary to carry out all action operations before delivery to
the end customer, as required by the White Book and explicitly reported in the Pre-delivery checklist.
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
MAS003644
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
1
Procedure
TECHNICAL SERVICE OPERATIONS
All images shown in this bulletin are for illustrative purposes only.
1. Always check ModisCS+ to see if the vehicle is involved in this action and if it has not been
previously performed.
2. Disconnect the 12V battery by following the procedure in the workshop manual:
a. 08.20.001 - BATTERY - Connection-disconnection of power supply
3. Following the procedure indicated in the workshop manual, remove the side mirror.
a. 9.35.001 OUTSIDE MIRROR PASSENGER SIDE Removal-Refitting or Replacement
NOTE: Both rear view mirrors must be inspected!
4. Once removal has been carried out, check the integrity of the wiring, paying attention and
identifying pinch marks or damage as shown in Figure 1.
Note: Refer to the image below to understand the type of damage that can be found
NOT OK
FIGURE 1
5.
Inspection results:
•
OK ► No sign of pinched or damaged wiring harness: Reassemble the mirror. Proceed with the
utmost care and attention when reassembling the mirror, reassembling all the removed parts by
following the removal procedure in reverse order. No further action needed.
•
NOT OK ► Wire harness is pinched and/or damaged: The mirror motor assembly must be
replaced. Continue to Step 6: Examples are shown in Figure 2.
NOTE: Take care not to scratch or damage the painted surfaces. Use masking tape if necessary.
FIGURE 2
© 2023 Maserati Americas
Aftersales
www.maseratiusa.com
MAS003644
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
6. To replace the motor assembly, it must be removed from the mirror housing following the
procedure described in this bulletin in the following steps.
7. Connected the external rear view mirror connector to the door harness (1) (as shown in
Figure 3) and reconnect the 12V battery according to the procedure indicated in the
workshop manual. 08.20.001 – BATTERY - Power supply connection – Disconnection
FIGURE 3
8. Once the mirror has been connected to the vehicle's electrical system, close the external
rear-view mirror to access the screws indicated in Figure 4 and remove them.
FIGURE 4
9. Once the screws have been removed, it is possible to reopen the mirror and disconnect the
12V battery again.
10. Disconnect the connector (1). Figure 5
FIGURE 5
© 2023 Maserati Americas
Aftersales
www.maseratiusa.com
MAS003644
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
3
FIGURE 6
12. The internal mirror links are now visible. Disconnect the indicated connectors. Figure 7
FIGURE 7
13. Undo the indicated screws. Figure 8
FIGURE 8
© 2023 Maserati Americas
Aftersales
www.maseratiusa.com
MAS003644
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
4
TECHNICAL SERVICE OPERATIONS
11. With the utmost care, using a plastic trim removal tool, remove the external glass of the rearview mirror (1). Figure 6
TECHNICAL SERVICE OPERATIONS
14. Remove the gasket (1). Figure 9
FIGURE 9
15. Slide the mirror base (1) and the entire mirror body outwards as shown. Figure 10
FIGURE 10
16. At this point it is possible to replace the rear-view mirror motor assembly, reusing the rear-view
mirror assembly housing.
17. Reassemble all removed parts following the removal procedure in reverse order.
18. Perform a functional test.
19. Carry out the same procedure on the other side of the vehicle as well.
20. Procedure complete.
© 2023 Maserati Americas
Aftersales
www.maseratiusa.com
MAS003644
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
5
Replace the component ONLY if the inspection did not pass (NOT OK):
Please order the following PNs, referring to the spare parts catalog and following the indications
contained in the included VIN-List.
Use the included VIN list to order the correct PN using the VIN
Complete VIN
VIN
Status
PN
ZAMBMRAB1P0413312
ZAMBMRAB4P0430864
ZAMBMRAB5P0418917
ZAMBMRAB0P0434967
ZAMBMRABXP0430870
413312
430864
418917
434967
430870
95
93
90
91
90
A
B
A
A
B
Type
Spare parts
PN
QTY
LEFT EXTERIOR MIRROR
670293592
1
RIGHT OUTSIDE REARVIEW MIRROR
670293584
1
LEFT EXTERIOR MIRROR
670293591
1
RIGHT OUTSIDE REARVIEW MIRROR
670293588
1
Type A
Type B
Warranty claim
Complete your warranty claim as follows:
Description
Code
Rapid Update Number
646
Cost code
23
Error code
063
Component Code
9.35.001
Operation Code
▪
Check 2 sides
9.35.001.A (1.60 h)
▪
Check 2 sides + Substitution 1 side
9.35.001.B (1.85 h)
▪
Check 2 sides + Substitution 2 sides
9.35.001.C (2.10 h)
© 2023 Maserati Americas
Aftersales
www.maseratiusa.com
MAS003644
All rights reserved. Reproduction or translation in
whole or in part is not permitted without
authorization from the publisher. Printed in USA
6
TECHNICAL SERVICE OPERATIONS
Spare Parts
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TSB/Document ID: MAS003644
Replacement Service Bulletin Number:
MFR Communication Date: 2023-07-24
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: VISIBILITY:REARVIEW MIRRORS/DEVICES
MFR Component System:
MFR Component Subsystem:
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