Rear wheel lock-up may result in loss of vehiclecontrol and an accident.

Service Brakes, Hydraulic — Power Assist — Vacuum — Hoses, Lines/Piping, And Fittings

Summary
The hydraulic brake pressure reduction valve causes the rate of hydraulic pressure reduction to slow down, which may result in the rear wheels locking-up even with the anti-lock brake system in operation.
Actions
Porsche dealers will install a modified hydraulic brake pressure reduction valve.
Documents (1)

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Date Announced
DEC 07, 1993
Vehicles Affected
1,149
NHTSA Campaign #
93V205000
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