Overview
This document details a workshop campaign to replace the coolant reservoir in the 2017 Porsche 911 (991) due to potential issues with the float sticking at the lowest position. It outlines the symptoms, remedial actions, affected vehicles, necessary parts and materials, and the required tools for performing the replacement.
Affected Vehicles
A total of 2,668 vehicles in North America are subject to this campaign. Only vehicles assigned to the campaign, as listed in the PIWIS Vehicle information, are affected. Specific model information is provided to ensure accurate identification.
Issue Identification
The potential defect involves the coolant reservoir float, which may stick at the lowest position. As a result, a warning message to ‘Refill coolant immediately’ is activated in the instrument cluster when the engine reaches operating temperature. Identifying this issue is critical for maintaining vehicle performance and safety.
Remedial Action
The corrective procedure is to replace the coolant reservoir. The document specifies the parts needed for the replacement, including the Porsche part numbers for seamless ordering and inventory tracking.
Tools and Materials
A list of required tools is provided, with specifications about the type, range, and example models. These tools are necessary for the technician to perform the replacement correctly and safely. Moreover, the materials section lists the required antifreeze and grease quantities, ensuring the technician is fully prepared for the procedure.
Procedure
The manual walks through the preparatory steps, including raising the vehicle, draining coolant, and additional steps for convertible models. It also outlines the disassembly steps needed before the coolant reservoir can be replaced. While not all procedural details are included in the summary, they are referenced with specific sections from the Workshop Manual to guide technicians.
Warnings and Recommendations
A crucial warning regarding vehicle voltage during control unit programming is highlighted, indicating that failure to maintain the specified voltage is not a warrantable defect. This emphasizes the importance of following the proper procedure to avoid damage.
With clear, step-by-step instructions and detailed technical information, this manual serves as an essential resource for Porsche service technicians undertaking the replacement of the coolant reservoir in the 2017 Porsche 911 (991) model.
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