Exterior Lighting Related Problems of the 2003 Mercury Mountaineer

Table 1 shows two common exterior lighting related problems of the 2003 Mercury Mountaineer.

Table 1. Exterior Lighting related problems of Mercury Mountaineer

Problem Category	Number of Problems
Brake Light Switch problems	1
Exterior Lighting problems	1

Brake Light Switch problem #1

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.

Exterior Lighting problem #2

The inside dome lights and the lights on the outside side mirrors do not go off until 15 to 20 min's after it has been alarmed this has run down my battery I had to buy a new battery.

Exterior Lighting related problems in other Mercury Mountaineer model year vehicles:

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