At a glance
What can fail
A control unit may have improper soldering that causes intermittent failures in various systems, which could affect how the vehicle drives.
What the fix does
Dealers will replace the affected control unit at no cost to you.
I notice the defect descriptions for both recalls appear to be incomplete — they name the manufacturer but don't describe the actual physical defect. I only have the risk statements to work from, which means I can describe the consequences but not the underlying mechanism for either recall.
Here is the best summary I can produce with the available information:
The 2018 Porsche Panamera 4 Sport Turismo has 2 recalls, the more serious involving the brake system, where worn brake pads may not trigger a warning to the driver, leaving the brakes unable to stop the vehicle effectively.
There is also an electrical system recall where a fault can impair vehicle driveability and raise the risk of a crash.
At a glance
What can fail
A control unit may have improper soldering that causes intermittent failures in various systems, which could affect how the vehicle drives.
What the fix does
Dealers will replace the affected control unit at no cost to you.
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Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The instrument cluster may fail to display a visual warning when brake pads become worn, preventing drivers from knowing when brake service is needed.
What the fix does
Porsche dealers will update the instrument cluster software at no cost to restore the brake pad wear warning display.
Summarized — see the official notice for exact wording, dates, and contacts.