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Mercury Grand Marquis Radio Code

Learn if it's a simple fix or time to seek out a trusted technician.

What are common reasons my Mercury Grand Marquis needs a radio code?

While there are a variety of reasons your Mercury Grand Marquis needs a radio code, the most common 1 is loss of power to the radio.
100%
of the time it's
Loss of power to the radio

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don,t know a code but no tail lights no turn signal no hazard no interior lights or trunk lights. head lights work ra...