The drains in the Cabriolet top can clog, causing water to leak onto the carpets. Water can also accumulate in the doors, causing various electrical problems.
Problems for specific Porsche Boxster S years:
Car problem reports
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Most reported 2008 Porsche Boxster S problems
If the vehicle cannot return to run position after start or if the interior fan is not getting power, it may be the electrical portion of the ignition switch has become erratic or has failed. The entire switch assembly should be replaced.
Persistent coolant loss can be caused by a small leak at the coolant reservoir. Our technicians tell us the leak may not be visible due to the trunk carpet hiding the leak.
Engine vacuum leaks can develop from various locations resulting in illumination of the Check Engine Light.
Windows and interior trim can be prone to squeaks and rattles. Numerous, small adjustments may resolve the issue. Additional creaks have been attributed to front and/or rear window fit as well.
If the airbag warning light illuminates, it must be attended to quickly. Seat belt buckles, wiring updates/repairs, and airbag module faults may be the cause.
Abnormal noise may be noted when shifting or reverse gear is selected in vehicles with a manual transmission. If this problem is encountered, proper operation of shift cables and clutch should be verified before any other repairs are attempted.
Abnormal noises from the intermediate shaft area may be signs of impending engine failure, don't wait to get this issue checked out!
Symptoms such as dragging or a stiff pedal can be caused by accumulated water entering the brake booster. The root cause is a plenum drainage issue. Updated parts are available for early-production vehicles.