One problem related to brakes failed has been reported for the 2006 Mercury Mariner Hybrid. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Mercury Mariner Hybrid based on all problems reported for the 2006 Mariner Hybrid.
The driver information display showed: brake system failure. Took vehicle to dealership, and was told that the item was not covered by extended warranty that I purchased through dealer. The item that was found to cause the code is the wiring that controls the hydraulic pump for the abs brake system. Although the brakes still function, but do not protect from locking up in an event of emergency braking.