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Key Programming Mercury Mariner 1997-2011

Mercury Mariner 1997-2011 Key Programming Procedure


The following are the key programming procedures for the year 1997, 2005 and 2011 Mercury Mariner.



Mercury Mariner 1997


1. Put the new key into the ignition. Turn it to the ON position. The dashboard security light will flash for 15 minutes. Once the dashboard security light stops flashing, you have five minutes to begin Step 2.

2. Turn the ignition OFF and then back to the ON position. The dashboard security light will flash for 15 additional minutes.

3. Repeat Step 2.

4. Once the dashboard security light has turned off for the third time, the key will be able to function in the car. It has been programmed into the car’s computer and has replaced ALL previous electronic key codes — the computer will not recognize any other key.


1. Put the current key into the ignition.

2. Turn the ignition ON and back to OFF.

3. Remove the current key and insert the new key, turning it ON. You MUST do this within 15 seconds.

4. The security light will switch on for two seconds, confirming that the key has been successfully programmed into the vehicle.


Mercury Mariner 1998 +

ADD KEY (Requires two working keys):

1. Put a current key into the ignition.

2. Turn the ignition to ON, then back to the OFF position.

3. Remove the key and insert a second key. Turn it ON and back to the OFF position. You MUST do this within five seconds.

4. Before ten seconds have elapsed, put a new key in and turn the ignition ON. After one second, turn the key back to the OFF position.

5. The dashboard security light will glow for three seconds. This confirms the programming of the new key has been successful.


About Mercury Mariner

The Mercury Mariner, which debuted alongside the Ford Escape’s 2005 update, was positioned above both the Ford Escape and the Mazda Tribute in the compact sport utility vehicle segment. It also features a two-tone interior, turn signal repeaters adapted from the European-market Ford Maverick, monotone cladding, and the iconic Mercury “waterfall” front grille. Unlike its competitors, the powerplant lineup did not have a manual transmission. Since the Mercury Cougar was discontinued in 2002, the Mariner was the first Mercury with a four-cylinder engine. The Mariner Hybrid was introduced in 2006, expanding the portfolio.

The Mariner received HD Radio as a standard feature for the 2011 model year, but retained the same amenities as the 2010 versions. This was the final edition of the Mariner, as Ford abandoned the Mercury brand owing to dwindling sales. The Mariner was phased out of manufacture by Ford in October 2010.

On October 5, 2010, the last one rolled off the assembly line.

The powertrain of the Mariner Hybrid was identical to that of its sibling, the Ford Escape Hybrid. It was introduced to the US market in 2006 and was phased out along with the rest of the brand in 2010. The Mariner hybrid sold 12,300 units in total. The Mariner Hybrid, like the Ford Escape Hybrid, is a “full” hybrid electric system, which means it can automatically switch between pure electric power, pure gasoline engine power, or a combination of electric battery and gasoline engine operating together for maximum performance and efficiency at all speeds and loads. The Mariner’s hybrid powertrain uses regenerative braking while braking or decelerating, in which the electric drive motor transforms into a generator, transferring the vehicle’s momentum back to electricity for storage in the batteries. The Mariner Hybrid has approximately the same acceleration performance as the regular 200 horsepower (150 kW) V6 Mariner, with 155 hp (116 kW). Like the Escape Hybrid, it achieves a decent average of 34 miles per US gallon (6.9 L/100 km; 41 mpgimp) and is commonly referred to as the most fuel efficient sport utility vehicle on the market.

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