Question about 2003 Mercury Mountaineer
Disconnect the battery and charge it; then reconnect the battery. There are 2 systems which can cause this. The antitheft and the battery drain protector.
The antitheft can view a very low charge as an attempted theft. The battery drain protector is an automatic shutout for any circuit that is putting too heavy a demand on the Alternator. This feature can actually disconnect a charging system if it is making the Alternator work too hard.
This is why the battery must be fully charged. Since components have gotten flimsy the drain protector is trying to keep the Alternator from overheating.
Other causes for blinking are reversed polarity and relays that are kicking out due to bad contact points. If there is anyway to borrow a scanner, it may identify the defect.
Posted on Mar 29, 2015
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Posted on Jan 02, 2017
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