zumo staying on after ignition is switched off

[dai12gsse]

Hi all,

You recently helped me with some info on making up the CAN BUS lead for my zumo 660......which worked a treat i might add

I have mounted the unit using a migsel mount (quality bit of kit!!) and the ram mounts and cradle supplied with the kit.

When i attach the unit to the cradle (ignition off) nothing happens

when i turn on the ignition the unit comes to life.....so far so good

When i turn the ignition off the garmin stays on indefinately....shouldn't it turn itself off after 30 seconds or so?

when i remove it from the cradle (after several minutes of it being in the cradle and on despite the ignition being off) it tells me that i have disconected it from the vehicle power source and that it will shut down in 30 seconds unless instructed otherwise.

If i then turn it off and re-attach to the cradle (ignition still off) then nothing happens (which is as you'd expect)

My question is:-

Is this normal? Shouldn't power be turned off after 30 seconds or so of ignition being turned off thus switching off the unit (which i thought was the whole point of the can bus lead) or do you have to physically turn it off every time, even after turning off the ignition?

Its a minor irritation to be honest but i'd appreciate any advice you may have.....

Thanks!

 

[Wapping]

That is very odd.

The GPS device should indeed switch to its internal batteries when the ignition is switched off and the bike's electrics 'powers down', which (from memory) is about 30 seconds or so after the ignition is switched off.

The bike's electrics (or at least part of them) should only stay live for an alarm, running the clock invisibly, or if a BuMW charger is used. It's as if the sytem is 'seeing' the GPS device as something that needs to be powered with the ignition off.

Does it flicker when you start the engine? from memory it should power down briefly as the system pushes all available power to the starter motor. What hapens if you pull the spark plug leads off, the bike won't start of course but the GPS device should switch to its internal batteries.

Here's a real guess.

Is your bike second hand? Does it have anthing else running off (or into) either the battery or the bike's electrical system? I only ask as I saw one bike where a previous owner had run a lead up from the battery to the beak and the new owner had tapped into that, thinking it was the dedicated spur. He couldn't work out why the GPS would not turn turn off. But that in itself would not explain why the device turns on with the ignition, just as it should do. If it were permanently live, it should light up all the time.

Time to try to see if it's the device or your homemade lead or the bike's electrics (or perm any three from three).

Can you run a lash up power lead to the OEM socket onder the seat? If so, does the same happen?

Can you run a low voltage bulb from the spur to see if that stays on, too?

 

[Wapping]

One mo' t'ing....

Is the software on the GPS device up to date. Not sure if it makes any difference but you might as well exclude it as a possibile cause of a problem.

 

[Padge]

Try the simple things first.
Sounds like something is tricking your power socket to stay live (as if there's a battery charger connected to it).
If the bike battery is getting weak or you didn't go for a long run the battery in the Zumo may trick the system into believing it being charged through this "canbus" socket whick may have a higher voltage.

Take the bike for a decent run with heated grips and stuff off to get a good charge into the battery. See if it happens then?

If so, you can either replace the battery on the bike (which would be ultimately necessary anyway) or put a cheap diode inline in the power lead from the Zumo.

 

[Padge]

One mo' t'ing....

Is the software on the GPS device up to date. Not sure if it makes any difference but you might as well exclude it as a possibile cause of a problem.

That is very odd.

The GPS device should indeed switch to its internal batteries when the ignition is switched off and the bike's electrics 'powers down', which (from memory) is about 30 seconds or so after the ignition is switched off.

The bike's electrics (or at least part of them) should only stay live for an alarm, running the clock invisibly, or if a BuMW charger is used. It's as if the sytem is 'seeing' the GPS device as something that needs to be powered with the ignition off.

Does it flicker when you start the engine? from memory it should power down briefly as the system pushes all available power to the starter motor. What hapens if you pull the spark plug leads off, the bike won't start of course but the GPS device should switch to its internal batteries.

Here's a real guess.

Is your bike second hand? Does it have anthing else running off (or into) either the battery or the bike's electrical system? I only ask as I saw one bike where a previous owner had run a lead up from the battery to the beak and the new owner had tapped into that, thinking it was the dedicated spur. He couldn't work out why the GPS would not turn turn off. But that in itself would not explain why the device turns on with the ignition, just as it should do. If it were permanently live, it should light up all the time.

Time to try to see if it's the device or your homemade lead or the bike's electrics (or perm any three from three).

Can you run a lash up power lead to the OEM socket onder the seat? If so, does the same happen?

Can you run a low voltage bulb from the spur to see if that stays on, too?

Christ man, you've some bizarre troubleshooting methods... do you ever manage to get out on the bike at all

 

[dai12gsse]

Thanks for the suggestions guys.

Its a new bike but its been standing since it was delivered in December due to weather etc so the battery could well be a bit low. I'll stick it on the optimate first to eliminate the battery level as a cause....

Just so i'm clear, should the zumo shut itself down completely (i.e. blank screen) when (or 30 seconds after) the ignition is turned off?

 

[Wapping]

.

Just so i'm clear, should the zumo shut itself down completely (i.e. blank screen) when (or 30 seconds after) the ignition is turned off?

On turning off the bike's ignition the GPS should simply flash up a message that it has lost external power, would you like to continue on battery? YES or NO. From memory the device gives you something like 20 seconds to decide, after which it shuts down fully.

 

[dai12gsse]

thanks - that makes sense and its what i would have expected to happen. It does do that but only when i physically remove it from the cradle which does seem to indicate that there's still power going to it long after the ignition has been switched off.

However, once it is removed the power seems to cut off straight away because re-attaching it at that point has no effect and the screen is blank until the ignition is turned on again.

Going to give both Garmin and bike battery a good charge to see if that cures it.

If that doesn't work then i'm a bit stumped. The can bus lead was a good job and fairly hard to get wrong with the excellent instructions on this site. There were no other accessories attached at the time (since fitted an intercom via spliced lead (genuine) from the accessory socket).

Thanks again for all the advice......i'll keep you posted

 

[Wapping]

However, once it is removed the power seems to cut off straight away because re-attaching it at that point has no effect and the screen is blank until the ignition is turned on again.

That bit of the operation is working properly, for sure. The socket is dead until the ignition system is engaged.

Something is simply keeping the system open when the ignition is first tuned off.

Either the system is 'seeing' the GPS as a peripheral that has to be powered

or

it's 'seeing' it as a power source (pushing power in, like a charger) that needs to be kept open, but in keeping the channel open it is still pushing power out (from the bike's battery to the device) which explains why you do not get the message about external power being lost. Eventually the bike's battery should go flat, triggering the 'External power has been lost, would you like to switch to internal battery' prompt.

I think I read you right that the problem manifested itself before you wired in the intercom? So, I guess that rules out the possibility that the intercom (and not the GPS) is creating the demand and that, somehow, they share the same circuit.

......i'll keep you posted

Good man.

 

[dai12gsse]

Problem solved

Hi guys,

the problem is now sorted. I gave the bike and zumo a full charge overnight and it is now operating as expected.

The bike battery was obviously a little low and the system saw the garmin as a source of power for "topping up" hence it kept the electrical pathways open.

I'm just glad i didn't have to revisit the wiring as it took some time to do a neat job with the cables....

Thank you very much for all the help and advice I hope i can return the favour some time (not that i wish misfortune on you in the first place of course