122-Y7X3X-05

Service
Technical Information
11/18
ENU
1975
1
Symptom - Engine - Coolant Reservoir Cap Leaking: Further rework required (SY 11/18)
Model Line:
718 Boxster (982)
718 Cayman (982)
Model Year:
As of 2017 up to 2018
Subject:
Coolant reservoir cap
Symptom:
Coolant is leaking out at the coolant reservoir cap.
Cause:
The coolant reservoir cap may have been overtightened.
The locking lug for the limit stop of the coolant reservoir cap has broken off.
Procedure:
Remedial
Action:
Replace coolant reservoir filler neck and coolant reservoir cap.
Information
For this fault type, the coolant reservoir cap and the coolant reservoir filler neck must be replaced.
1
Open the luggage compartment and unclip covers ( Covers -1-) by prising them upwards using a
suitable tool.
Covers
2
Fold luggage compartment carpet ( Luggage compartment carpet -2-) to the rear ( Luggage
compartment carpet -arrow-).
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Service
1975
ENU
Technical Information
11/18
Luggage compartment carpet
WARNING
Hot fluid
•
Danger of scalding

Avoid contact with hot fluid.

Wear personal protective gear.
3
Extract coolant until the coolant level is below the coolant reservoir filler neck.
4
Release and disconnect return line ( Return line -1-).
Return line
5
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Fold foam ( Foam -2-) to the rear ( Foam -arrow A-).
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Service
Technical Information
11/18
ENU
1975
1
Foam
WARNING
Hot fluid
•
Danger of scalding

Avoid contact with hot fluid.

Wear personal protective gear.
6
Remove coolant reservoir filler neck ( Coolant reservoir filler neck -4-).
6.1
Loosen spring clamp ( Coolant reservoir filler neck -3-).
6.2
Pull coolant reservoir filler neck ( Coolant reservoir filler neck -4-) up and off ( Coolant
reservoir filler neck -arrow B-).
Coolant reservoir filler neck
7
Installation is performed in reverse order. Pay particular attention to the following:
Check that the spring clamp has engaged securely on the new coolant reservoir filler neck.
Check coolant level and top up if necessary.  Workshop Manual '190101 Checking the cooling
system'
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Service
1975
ENU
8
Parts Info"
Invoicing:
Technical Information
11/18
End of remedial action.
982.121.155.C
 Coolant reservoir cap
982.121.133.C
 Coolant reservoir filler neck
The work involved is invoiced under the labor operation:
APOS
Labor operation
19404900
Reworking reservoir
I No.
For invoicing and documentation using PQIS, enter the following coding:
Location (FES5)
19750
Coolant cap.
Damage type (SA4)
5014
Coolant leaking
References:
 Workshop Manual '190101 Checking cooling system'
Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a
discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed.
© 2018 Porsche Cars North America, Inc.
Apr 17, 2018
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