Brake Light Switch Problems of Mercury Mountaineer

Brake lights were not lighting. Fuse was blown, replaced fuse, stepped on brake pedal, then poof of smoke at fuse inside, and under hood smoke continued for 2 minutes. Found connector for switch on master cylinder was melted and switch is still bad. Disconnected connector from shorted switch causing fuse to blow. Then replaced fuse and now brake lights work. Cruise control was intermittent for the past 2 months prior to this event. Connector is tied to keep it secure until repair is made.

See all problems of the 2000 Mercury Mountaineer 🔎.

Failed brake light switch, Ford pn f00b13480-ba this switch failed because the bi-metal switch contact fractured from metal fatigue, which caused the switch to become inoperable: which causes the brakes lights to not function as well as prevent the transmission selector to properly engage. And in addition to noting the internal failure inside the switch the contact points inside appear to be pitted. Vehicle mileage is only 44,700. This switch design appears to be shared with other Ford and Mercury products, however it is interesting that there are no known sources in the after market; Ford oem only !.

See all problems of the 2004 Mercury Mountaineer 🔎.

Intermittently the brake lights staying lit after vehicle is turned off and key is removed. Likely that this failure also caused the brake lights to remain lit while driving, rendering the signal ineffective. Lights actually stayed on two occasions causing a dead battery once. Lights were noticed the second time, and wiggling the brake pedal extinguished all three indicators. Dealer replaced the brake light switch under warranty.

See all problems of the 2003 Mercury Mountaineer 🔎.