Stupid Hexhead question

[RTRandy]

What's the deal with the electrical system staying on for about a minute after you shut the key off? Sorry if it's been discussed, but never saw any mention on this issue.

I get the fancy cars that leave the lights on for people to have security lighting while they walk away from the car at night, but don't see the purpose of the power remaining on my bike.

My Zumo starts to power down when the ignition is shut ( that's a good thing), but when the power finally shuts down 50 seconds later, it causes the Zumo to power back up. I feel like the guy that has to keep opening the refrigerator door to make sure the light really goes out. Would love to know the advantage of having a delayed shut down.

[wezul]

The mighty Canbus.
You may want to use the search function, the Canbus has been discussed at length in other threads.

[marchyman]

What's the deal with the electrical system staying on for about a minute after you shut the key off? Sorry if it's been discussed, but never saw any mention on this issue.


It's a feature, not an issue. The issue is the broken operation of your GPS that decides it needs to turn on when external power is turned off. :stick

Also, possibly depending upon the bike style and vintage, the delay is variable. My '05 GS takes up to 15 minutes before it turns off the accessory socket. When it does turn the socket off my GPS (which is wired to what would otherwise be a secondary socket) is smart enough to ask me if I want to keep running on the internal battery. If I don't answer in 30 seconds it powers itself down.

Oh, and the only thing it has to do with the canbus is that it works that way on bikes with the canbus wiring system.

// marc

[RTRandy]

It's a feature, not an issue. The issue is the broken operation of your GPS that decides it needs to turn on when external power is turned off. :stick

my GPS is smart enough to ask me if I want to keep running on the internal battery. If I don't answer in 30 seconds it powers itself down.

Oh, and the only thing it has to do with the canbus is that it works that way on bikes with the canbus wiring system.

// marc

Actually Garmin makes all the Zumo's the same so yes mine performs the same countdown warning and no it's not "Broken". When the key is turned off the countdown begins on the Zumo.The shut off of voltage during the count down apparently fools it into powering back up.

It's an 08RT. I understand that the delay is inherent with the canbus. My question is what is the purpose of the delayed shut off if any.

[dancogan]

...My question is what is the purpose of the delayed shut off if any.

If you're listening to the radio or a CD you can finish the song/weather report/traffic report etc. even after you switch the ignition off. I suspect the real reason may have something to do with the BMW charger being able to communicate with the canbus, enabling charging through the accessory socket even long after the ignition is turned off.

[thtduck]

RT Randy, does Zumo eventually shut down or does it stay on forever? Where is Zumo getting it's power on your bike? Suspect the circuit you are wired to is always hot regardless of the ignition. Don't understand the intermittent power loss causing Zumo to prompt for shut down.

A friend w/ an '07 GS (Can-Bus) has his Zumo wired to the factory GPS circuit provided by BMW. He just purchased a plug so he could use that convenient circuit. His always stays on after the ignition is shut off and then powers down after the delay(much longer than 50 sec). My Zumo is wired to the Can-Bus helper on my bike that shuts off w/ the ignition, no delay. The delay would be nice for quick gas stops and keeping the GPS on.

[soffiler]

... My question is what is the purpose of the delayed shut off if any.

I have no doubt there's a purpose. I would not be surprised to learn that there's still some bits of data getting passed back and forth between the various modules on the bus for a short time after the key is turned off.

[Professor]

I sometimes wait till the Zumo powers back on, then turn it off again and it stays off.

The other day, I just shut the ignition off and went into a restaurant. I figured it would do the count down, shut off, power up, then count down and shut off again. But when I came out after my meal, the Zumo was still on. That concerns me a bit. I don't know why it didn't shut off after the RT did it's final power-off.

[jaherbst]

I sometimes wait till the Zumo powers back on, then turn it off again and it stays off.

The other day, I just shut the ignition off and went into a restaurant. I figured it would do the count down, shut off, power up, then count down and shut off again. But when I came out after my meal, the Zumo was still on. That concerns me a bit. I don't know why it didn't shut off after the RT did it's final power-off.

If it is connected to the factory provided plug in (correctly ie. is the zumo wires correctly compatable with the factory plug?) the zumo will shut down after the proper time when the key is turned off. Mine takes two minutes.

I spent the $95.00 for the factory harness with both plugs connected just for this reason. I fiqured I would be charged about the same to have the dealer wire the zumo provided wire to the factory plug plus buy the half harness. Always the possibility the tech would wire it wrong anyway. This was about $85.00.

I think your wires are not paired right. These things are very frustrating to say the least. ( 2008 R1200RT) Are you plugged into the factory provided plug? Does the zumo come on automaticaly?

[Professor]

Mine was wired by the dealer. It comes on when I turn on the ignition and used to go off after a minute or so when I shut the bike down. Last time I waited quite a while for it to shut down, but got tired of waiting - for some reason it was taking longer. So I shut it off manually. When I went back to check a few minutes later, the Zumo was on again.

[marchyman]

The aux power shutoff is "up to 15 minutes" on my GS. The riders manual says something like that. Is the RT the same? I find it very handy when you want to use something powered during a short stop but don't want to keep the ignition on.

I still think the Zumo is broken if it turns ON when power is removed. Garmin got it right on my 276C. When power comes on the GPS comes on. When power goes off and the GPS is on a 30 second countdown is triggered. I believe the Zumo does the same, no? The reported difference is that on the 276C if the GPS is off and power is lost the GPS stays off whereas with the Zumo the GPS switches on. Correct? Wow, that certainly breaks the principle of least astonishment. :deal

// marc

[RTRandy]

All gadgets on my RT such as Zumo, Valentine, Moto Lights and Autocom are all wired to the Touratech Can bus helper so everything works fine. It just seems odd that the system needs time to shut down.

Glad I'm not the only one experiencing the Zumo turning back on. I think it might have to do with the Zumo sensing change in voltage rather than simply OFF/ON. It's no big deal, since the Zumo is powered by the bike and can easily charge back up.

Maybe it's like expecting my computer to shut off immediatly when I ask it to shut off ?

Perhaps Soffiler had it right in that some information is still being communicated before shutting down though just guessing as well.

[tkbaker4]

I don't have Canbus but my Zumo is wired to an always hot circuit.
If I shut it off while it's still attached to the cradle it will power up when it is removed from the cradle. It does this also if I turn it off while attached to the computer and I then unplug it.

[Professor]

My main concern is whether or not the Zumo is draining the RT's battery when it comes back on. I'm guessing that it isn't, but don't know for sure. I wouldn't want to find a dead battery when I'm ready to start up in the morning. I think at that point it is just running off of the Zumo battery.

[tkbaker4]

My main concern is whether or not the Zumo is draining the RT's battery when it comes back on. I'm guessing that it isn't, but don't know for sure. I wouldn't want to find a dead battery when I'm ready to start up in the morning. I think at that point it is just running off of the Zumo battery.

Try hooking the bike up to a tender and let the Zumo run over night. If the Zumo is dead in the morning, it wasn't drawing power from the bike.

[thtduck]

All gadgets on my RT such as Zumo, Valentine, Moto Lights and Autocom are all wired to the Touratech Can bus helper so everything works fine. It just seems odd that the system needs time to shut down.

Can Bus helper, and this is the main reason for it, is wired completely outside the Can Bus system. The "system" needing time to shut down should have no effect on the Can Bus helper and componets attached to it. It's trigger wire (yellow) is supposed to be connected to the "city or park" light so it turns of immediately w/ the ignition switch, no delay. I suspect yours is not because the helper and Can Bus system shouldn't know each other exist. Your helper might be wired correctly because you say everything works fine except Zumo turns back on. That's puzzling.

[MotorradMike]

Automotive problems are too simple for computers. Set them to these tasks alone and boredom takes hold.

Then they start acting up.