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Old 01-06-2017, 06:26 PM
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Ignition Switch Problem

I have a 1999 tj Sahara, and on occasions on start up, the Air Bag warning light comes on and the a/c blower motor stops working.
If I play around with the key...on/off a few times, it sometimes corrects itself.
I am wondering whether it is the multifunction key switch, or the electrical component of the switch, that is faulty.
Anybody got thoughts on this?

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Old 01-06-2017, 07:54 PM   #2
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HMMM if everything else works I'd check to see if it is relay related. I don't have my schematic handy so I'm just guessing.

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Old 01-06-2017, 08:10 PM   #3
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too many keys hanging on the ring wore out the mechanical parts of the key switch making it hard to get into the proper detent while in the RUN position. I have the same issue put am use to it
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Old 01-07-2017, 01:07 AM   #4
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It could be the key cylinder but it is more likely the ignition switch. The same contacts power fuses 5-8 in the fuse block. Fuse 5 is the air bag, 6 is the rear wiper if you have a hard top, 7 is back up lights & 8 is the HVAC blower & a/c compressor. If you lose all at the same time (& everything else is working), especially if wiggling the key gets them to work, you probably have a failing ignition switch. Some have taken them apart & cleaned the contacts & gotten them to work, most just replace the switch.
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Old 01-07-2017, 10:13 AM
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Rubi 4,

Thanks for your reply and splendid explanation. I have all the symptoms that you describe.

Looks like I need to replace the electrical component of the switch.

Hopefully there is a video somewhere, to guide me through the process.
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Old 01-07-2017, 12:45 PM   #6
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Originally Posted by LS13 View Post

Hopefully there is a video somewhere, to guide me through the process.
All you need to do is remove the steering column cover and the switch will be accessible on the left side of the column, opposite the lock cylinder.

Some relevant info here:

http://www.youtube.com/watch?feature...&v=W5m31g0-3wI
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Old 01-07-2017, 12:57 PM   #7
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Good video but you don’t have to remove the actuator assembly to change the ignition switch.

After removing the plastic covers you will need a security t-10 Torx bit or you can break the security tab off with a small punch or even a common nail & use a standard bit. There is only 1 bolt holding the ignition switch on to the actuator assembly & with that removed you can slide the switch away from the actuator assembly. The switch snaps onto the actuator so you may need to pry it a little but be careful not to bend the flexible rod that goes into the switch. If that rod gets damaged it may hang up & the "key in" chime may come on even when you take the key out. Just be careful to go straight away from the actuator until the rod clears the switch & you should be OK. Then just unplug the wiring connector.

Here is a link on repairing the switch if you want to try it.

Ignition Switch repair

https://www.wranglerforum.com/f210/wi...l#post27198113
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Old 01-07-2017, 02:15 PM   #8
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Originally Posted by RUBI 4 MY MRS View Post
Good video but you don’t have to remove the actuator assembly to change the ignition switch.
That would be why the word "some" was underlined.

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Old 01-07-2017, 03:03 PM
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Thanks everybody,
I'm all set to replace the switch...once I get it here in Mexico! that's the difficult bit.
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Old 01-07-2017, 06:07 PM   #10
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Maybe fix yours??
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Old 01-04-2018, 02:23 PM   #11
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So glad I read this post. My air bag warning light had been going on intermittently for a few weeks, until finally it comes on every time about a minute after starting the vehicle. I figured I would have to replace my clock spring and had started reading up on the process. Then I noticed my heater fan wasn't working in any switch position.
From this info I replaced my ignition switch (relatively simple after watching a youtube video and ordering the appropriate tools).
Fixed both problems.
Thanks everyone for the info.

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