Key problem leads to radio, clock problems

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February 18, 2012

Auto Scanner Larry Rubenstein The Salem News Sat Feb 18, 2012, 04:30 AM EST

Q: I could not get my car key into the ignition to start my car. AAA sent a key specialist who took the key assembly apart, and he eliminated the first three tumblers that were either bent or broken. The car then started minus the three tumblers.

He said the car did work, and if I had a problem in the future, he would get a new assembly. However, when I went to use my radio, I got only flashing lights for a minute or two. Then two days in a row, my battery went dead.

So, I had the mechanic remove the fuse. I now drive my car without the use of my radio or clock.

My question to you is if he removed three tumblers, could that cause the radio to stop, or could it be a pinched wire? I would appreciate your excellent advice as to a cure. I read your column faithfully and feel you are the auto doctor.

A: You need to go back to the root of the problem and when the problem began. That, of course, is when the ignition switch was modified. Your ignition switch has a key in circuit that keeps the radio alive when the key is in the switch but not turned to the accessory mode. That system has been compromised. Once the system is brought back to proper engineering specs, which would mean replacing the cylinder, you should be good to go. If further problems exist, diagnostics can be done only after the ignition switch problem is corrected.

Q: I have a 2007 Mercury Mountaineer that is loaded with all the options.

One of the options is when you sit in the driver's seat and put your key in the ignition, the seat moves up to a preset position.

About two months ago while I was driving, the front interior light came on and the driver's seat started to move forward and back.

As you can see, this is a serious hazard while driving. Problem is that it only happens to my wife and not all the time, so I do not know how the dealer can find the problem. Any ideas why this is happening?

A: Once I read your letter, my mind went right to the potentiometer in the seat adjustment.

But then after rereading your letter and noting that the interior lights are coming on, as well, I tend to think the micro switch in the driver's door has gone bad. This is a common problem and not a major job to replace. Now you ask why this should happen only when your wife drives, and not you. I think the answer is simple. You probably have more arm strength and close the door with more force, whereas your wife may not pull the door quite as hard and leaves the door ajar/interior light switch not fully latched.

Car Care Tip: When replacing a burnt headlight on a car, you should change them in pairs. Also, consider installing the Sylvania Ultra Brights. The difference is phenomenal.

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Larry Rubenstein is a master technician who owns a North Shore service station. His column appears every Saturday. Write to Larry at The Salem News, c/o Auto Scanner, 32 Dunham Road, Beverly, MA 01915, or send an email to scanauto@aol.com.

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Key problem leads to radio, clock problems

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