Originally Posted by FriendSSEI
Sometimes a steering wheel under pressure from where it is parked can in the locked position make it difficult to turn the key. It would be great if all you had to do is turn the wheel back and forth to unlock the ignition. This has happen to me from time to time not just bonnevilles any rig.Good luck
This does not apply to the 2K+ and many other newer vehicles. You are referring to vehicles where the key, while in the off position, will also lock the steering wheel from turning. In many new vehicles, the 2K+ Bonneville included, the steering wheel doesn't lock. Our ignition switches are mounted in the dash and don't function the same way.
Originally Posted by PURPLEHAZEIR
So now the firefighter comes out in me. If you are going to use WD40 on an electrical component, I would recommend that you remove it from the electrical source, use the spray, wipe it down and let it air dry before applying power back to it. WD40 has a flash point of 131F and certainly is not as volatile as other solvents, but still capable of ruining your day if it ignites. I would recommend that after using the WD40 on the bench, then use a solvent that is made for electrical components like a MAF cleaner spray. That should help remove all remnants of the WD40.
I would not be too concerned about WD-40 and sources of ignition (in this case). Unlike many older vehicles where there is the potential for more current and spark generation in the ignition switch, this is not the case with the 2K+ Bonneville. Virtually everything related to the ignition switch in these cars relates to controlling the input on a module at extremely low current. There is virtually no chance of spark or ignition with the few milliamps passing through the switch contacts as it grounds the appropriate input on the body control module. All the high current switching where a spark may be generated is isolated elsewhere in the vehicle.[/QUOTE]
This same problem occurred in my 2002 SE and it required replacing the key cylinder. You can try the method with WD-40, but I really suspect it won't help a lot. You're likely looking at some replacement parts.
Powdered graphite is actually a better lubricant for locks. Liquids, depending on whether they completely evaporate can leave a flim that will collect dirt and dust contributing to further problems later. This is frequently use by locksmiths.