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Discussion Starter #1
While riding today my TMPS light came on and stayed on. This is not the light that tells you that the tire pressure is low but the one that tells you the system is working or not. I have a 2010 1800 with everything but the airbag.

The bike is 1 year old now and has 8000 miles on it. Nothing has been changed on the bike recently (including tires). Tire pressures (after cool down) are where they should be.

What is the most common cause of the TMPS light coming on and what needs to be fixed?

Should the fix be covered under the warranty?

Thank you,

Bill
 

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I have a spare rear wheel that has the TPMS sensor. Anytime I switch wheels and use the spare the TPMS light stays on constantly. I did some research and the sensor in each wheel has to be calibrated to the TPMS on the bike.....I would guess that one of your sensors is not transmitting or the TPMS on the bike is not receiving the signal from the sensor.

I don't know how to check that, but if it is still under warranty any dealer should be able to troublshoot it for you.
 

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My 2009 had issues when I got it. After replacing the brains, it still did not work properly. Honda does not make this unit and the Honda engineers did not know how to fix it so, they had the dealer replace the brain again and both sensors. Now it works perfectly but, nobody really knows what was wrong.
 

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Discussion Starter #5
TMPS Indicator always on

Interestingly after being on for the entire ride yesterday with several start/stop the engine cycles when I started the bike this morning the light was on again. After I rode for five minutes or so it went out. Now when I start the engine it comes on for about 1 second along with the low pressure light and then goes out (normal operation).

I had already made an appointment with the dealer to take it in. I stopped by today and talked with the service manager. He and I decided together that it would be best to ride the bike a while to see if the problem had cleared itself or if it happened again. It is very hard for them to fix something that they can not see malfunction.

I hate problems like that.

Bill
 

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The machines sense they are going to the shop and quit malfunctioning. Must be something programmed in the computer. Always happens to me with whatever vehicle I own. Frustrating. Good luck.
 

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My money would be on a wheel sensor with a weak or defective battery.

If the light comes on again, there is a diagnostic mode that can be activated relatively simply. Only the seat need be removed and the red Diagnosis plug shorted (sits in the boot along the left frame rail near the rear of the bike).

It should take only a few minutes for the Honda tech to remove the seat, short the plug and then read the code off of the dash.

The trick is that the light (issue) needs to be occuring when you short the plug. This is actually something that you could do if you are interested. If so, you can find the instructions in Chapter 21 of the ETM of the Service Manual. If you don't have the ETM, I could share with you what you need to do.

This would allow you to diagnose the issue yourself....the shop would still need to confirm it for warranty though.

Interestingly after being on for the entire ride yesterday with several start/stop the engine cycles when I started the bike this morning the light was on again. After I rode for five minutes or so it went out. Now when I start the engine it comes on for about 1 second along with the low pressure light and then goes out (normal operation).

I had already made an appointment with the dealer to take it in. I stopped by today and talked with the service manager. He and I decided together that it would be best to ride the bike a while to see if the problem had cleared itself or if it happened again. It is very hard for them to fix something that they can not see malfunction.

I hate problems like that.

Bill
 

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I have had my 2009 since new April 2009. The TPMS System Failure light has come on twice when riding normally. Once in 17 degree weather for about 15 minutes and a couple of months ago it came on for a minute while on my way to work. That was it. One thing I would suggest is to reduce the pressure in your front tire to cause the Low Pressure light to blink to make sure it works. Especially when the System Failure light is on solid. That might help with the diagnostics.
If the Low Pressure light works at the same time as the System light is on solid at least you will know the system is working. Might be a short of some glitch in the system.
 

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The machines sense they are going to the shop and quit malfunctioning. Must be something programmed in the computer. Always happens to me with whatever vehicle I own. Frustrating. Good luck.

Maybe the bike itself is afraid to go to the dealer.:lol:
 

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My money would be on a wheel sensor with a weak or defective battery.
I agree. These things have Lithium batteries in them, and as such are subject to passivation problems when first turned on. The Concours uses identical LDL sensors, and we've seen a rash of battery induced problems on them too. If the sensor suddenly starts working again after it warms up, that's a good indication the battery had a passivation layer build up in it.
 
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