Red key light on dash/losing power - Suzuki GSX-R Motorcycle Forums Gixxer.com
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post #1 of 14 (permalink) Old 09-14-2018, 01:24 AM Thread Starter
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Red key light on dash/losing power

Was riding on the freeway and noticed the red key light on the dash came on for a few seconds and I lost power... A few seconds later I gained power again. Also my rev gauge was going zero and then back again.

Obviously the key light is the immobilizer so does that mean it is engaging randomly while I'm riding?

Any ideas? THANKS IN ADVANCE


2006 GSXR 750

Last edited by gsxarrrrr750; 09-14-2018 at 05:13 AM.
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post #2 of 14 (permalink) Old 09-14-2018, 08:01 AM
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Re: Red key light on dash/losing power

Sounds like a potential wiring issue or system voltage issue.
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post #3 of 14 (permalink) Old 09-15-2018, 01:22 AM Thread Starter
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Re: Red key light on dash/losing power

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Originally Posted by TheGeek View Post
Sounds like a potential wiring issue or system voltage issue.
wondering if theres anything I can do/check before taking it in to the shop any suggestions...?
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post #4 of 14 (permalink) Old 09-17-2018, 07:09 AM
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Re: Red key light on dash/losing power

Other than basic electrical troubleshooting, no. I've never messed with a bike that has the immobilizer.
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post #5 of 14 (permalink) Old 09-17-2018, 08:17 AM
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Re: Red key light on dash/losing power

You could start by measuring the battery voltage when the ignition is off, once you switch it to on, and at 3-5000rpm once you've started it. If that checks out, you'll have to troubleshoot the wiring between the immobilizer and the ECU.
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post #6 of 14 (permalink) Old 09-20-2018, 08:45 AM
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Re: Red key light on dash/losing power

Check battery is charged first, then check regulator/rectifier & stator (charging system) as mentioned above. Extremely low battery can do some weird things with the electronics and cluster.
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post #7 of 14 (permalink) Old 09-20-2018, 03:44 PM
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Re: Red key light on dash/losing power

It occurs to me that the ECM may have lost power for a small interval, which caused it to reacquire the immobilizer when power came back on. It wasn't producing a tach signal during that time, which is why the tach went to zero. A common reason for brief loss of power is the interlock relay tripped because the side stand switch bounced open. So you might not have both springs on the side stand or something else happened that's related to the switch not remaining closed.
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post #8 of 14 (permalink) Old 07-16-2019, 06:08 AM
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Re: Red key light on dash/losing power

Hello, did you fix the problem? Can you please share as I have the same problem ATM.
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post #9 of 14 (permalink) Old 07-16-2019, 10:59 PM
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Never mind, I remove the kickstand sensor and now the problem is gone.
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post #10 of 14 (permalink) Old 07-16-2019, 11:46 PM
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Re: Red key light on dash/losing power

^Not the smartest move unless it's a racer. The kickstand switch prevents you from riding with the kickstand down, which is a recipe for a crash. Fix the problem. It might be missing springs, a worn out or loose pivot, a failing switch, or something else.
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post #11 of 14 (permalink) Old 07-17-2019, 12:58 AM
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Re: Red key light on dash/losing power

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Originally Posted by BillV View Post
^Not the smartest move unless it's a racer. The kickstand switch prevents you from riding with the kickstand down, which is a recipe for a crash. Fix the problem. It might be missing springs, a worn out or loose pivot, a failing switch, or something else.
+1 Do not ride a street bike without the kickstand switch.
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post #12 of 14 (permalink) Old 07-17-2019, 01:40 AM
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Re: Red key light on dash/losing power

I totally agree with you guys! I just wanted to know where the problem is coming from as I have readed a lot of topic what may cause it and then fix it. Now that I know where it is coming from, further troubleshooting have to be done
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post #13 of 14 (permalink) Old 07-18-2019, 02:00 AM
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Re: Red key light on dash/losing power

That "red key" light isn't a red key. That symbol is the temp sensor symbol and the red light is an FI warning.

One of five things may have happened...

Your sidestand spring is weak, your sidestand is loose, your sensor is dickered, the sidestand connection was loose, or the other end of the sidestand circuit was loose.
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post #14 of 14 (permalink) Old 07-18-2019, 10:43 PM
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Re: Red key light on dash/losing power

^The red key is indeed that, but only on immobiliizer equipped models. On K6 600 it's between the low fuel and high beam indicators, so it's probably the same on 750's. It's blanked out on non-immobilizers.
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