How do you deactivate the PASS-key II on a 1996 Buick Riviera?

There's no standard "PASS-Key II" system deactivation on a 1996 Buick Riviera (or any vehicle, for that matter). The PASS-Key II system is an anti-theft system that's integrated into the vehicle's computer and ignition system. It won't simply "deactivate." If the system is malfunctioning or you've lost the correct keys, you'll need professional help.

Here's why you can't just disable it and what your options are:

* It's tied to the car's computer: The PASS-Key II system is programmed into the car's computer. There's no simple switch or fuse to turn it off. Attempting to bypass it improperly could damage the vehicle's electronics.

* Security implications: Deactivating the system would render your car vulnerable to theft.

Your options are:

1. Obtain a replacement key: This is the recommended and safest approach. A dealership or locksmith specializing in automotive keys and security systems can usually program a new key that will work with your car's PASS-Key II system. They'll likely need proof of ownership.

2. Dealership visit: A Buick dealership is your best bet for resolving PASS-Key II issues. They have the diagnostic tools and expertise to troubleshoot problems and potentially reprogram the system if necessary. Be prepared for potential costs.

3. Specialized locksmith: Some locksmiths specialize in automotive security systems and may be able to help, but ensure they have experience with PASS-Key II systems for your specific vehicle year. Be wary of locksmiths offering suspiciously cheap solutions; they might be using less secure methods.

Do not attempt to bypass the system yourself. Doing so could damage the vehicle's electrical system, potentially costing much more in repairs than obtaining a new key. The risks far outweigh any potential benefits.