* Check for a hidden release: Some models have a small, sometimes concealed, emergency trunk release. Look very carefully around the trunk lock area (exterior) and in the taillights (some older cars had releases here). A very small keyhole or button might be present. This is a long shot, as 1992 models were less likely to have this feature compared to modern cars.
* Access through the back seat (if possible): Some Grand Marquis models might have a fold-down rear seat that allows access to the trunk. If this is the case, check if the seats fold down, and if there's any space between the seat back and trunk to potentially reach the latch. This requires careful and potentially damaging maneuvering.
* Professional help: A locksmith specializing in automotive locks is your best bet. They have tools and expertise to open the trunk without damaging the car. This is the recommended approach to avoid causing any damage.
* Roadside assistance: If you have roadside assistance coverage (like AAA), contact them. They often have services to assist with locked trunks.
Important Considerations:
* Avoid damaging the car: Any attempt to force the trunk open risks causing scratches, dents, or broken parts. Proceed with extreme caution.
* Safety: Be careful when attempting to gain access. Never reach into the trunk or anywhere near the vehicle where you can't see what's happening.
In short, while some methods might work, calling a locksmith is the most reliable and safest way to open the trunk without causing damage. The other methods are very much a "last resort" option and should only be attempted if you're comfortable with the risk of potentially damaging your vehicle.