Getting an extra smart key plus wheel key...

Lemers · 01-09-2011, 03:51 PM

Let me break it do for you.

You made a state of putting the FOB in the fobgina will save battery life.

I asked it you unlock your door with the physical key to save even more battery life.

You said that leaving your key out would use more battery life.

That is where I knew you were confussed and decided to mess with you about leaving the key in the door.

Red__Zed · 01-09-2011, 04:30 PM

Quote:

Originally Posted by Lemers

Let me break it do for you.

You made a state of putting the FOB in the fobgina will save battery life.

I asked it you unlock your door with the physical key to save even more battery life.

You said that leaving your key out would use more battery life.

That is where I knew you were confussed and decided to mess with you about leaving the key in the door.

More accurately:

OP asked if there was any reason to put the key in there.

Nogoodname correctly states that it does not charge, incorrectly states that there is no reason to place the fob in the dash.

I note that it will significantly reduce battery consumption, since the OP was wondering whether there was any benefit.

You attempt to

. If you want to continue, take it to PMs to avoid derailing the thread farther.

Quote:

Originally Posted by ChrisSlicks

It will not.

Yes it will. Places the fob in the dash reduces the required power transmission levels significantly.

ChrisSlicks · 01-09-2011, 04:46 PM

Quote:

Originally Posted by Red__Zed

Yes it will. Places the fob in the dash reduces the required power transmission levels significantly.

The transmitter in the fob operates at a fixed power level, just because the signal has to travel a shorter distance won't help it in this case.

Red__Zed · 01-09-2011, 05:04 PM

Quote:

Originally Posted by ChrisSlicks

The transmitter in the fob operates at a fixed power level, just because the signal has to travel a shorter distance won't help it in this case.

It does not. The transmission is inversely proportional to received power level.

I've taken one of the fobs apart and actually played with the circuitry. Where do you gather that the transmission level is fixed?

sonic370 · 01-09-2011, 06:39 PM

i don't understand why you didn't get 2 sets of fobs........ your car is to new to get only one.. go back to the dealer and ask them where the second fob is at.

Doug&Michelle · 01-09-2011, 11:16 PM

Quote:

Originally Posted by sonic370

i don't understand why you didn't get 2 sets of fobs........ your car is to new to get only one.. go back to the dealer and ask them where the second fob is at.

I bought it used at a Chevy dealer (trade in). They only had the one key and no key for the wheels. They weren't even sure if there was an owner's manual but I did find that in the flip out behind the passenger seat.

ChrisSlicks · 01-09-2011, 07:02 PM

Quote:

Originally Posted by Red__Zed

It does not. The transmission is inversely proportional to received power level.

I've taken one of the fobs apart and actually played with the circuitry. Where do you gather that the transmission level is fixed?

When I took mine apart I didn't identify anything that could control the transmitter power. Are you saying you actually measured the output? I didn't go as far as actually probing the circuit so if that's the case it is interesting. But I'll still keep the key in my pocket and replace the $1 battery when the time comes.

Red__Zed · 01-09-2011, 07:49 PM

Quote:

Originally Posted by ChrisSlicks

When I took mine apart I didn't identify anything that could control the transmitter power. Are you saying you actually measured the output? I didn't go as far as actually probing the circuit so if that's the case it is interesting. But I'll still keep the key in my pocket and replace the $1 battery when the time comes.

I keep mine in my pocket as well. I was just answering OP's question.

More accurately, TX power stays roughly the same, but the more power is received, the less that needs to be supplied by the battery. With a high enough RX power, the unit functions almost as a passive RFID.

ChrisSlicks · 01-10-2011, 07:17 AM

Quote:

Originally Posted by Red__Zed

I keep mine in my pocket as well. I was just answering OP's question.

More accurately, TX power stays roughly the same, but the more power is received, the less that needs to be supplied by the battery. With a high enough RX power, the unit functions almost as a passive RFID.

Ah, gotcha. And in the case of a dead battery it basically is a passive RFID. +rep for doing the extra digging.

LunaZ · 01-09-2011, 07:58 PM

Quote:

Originally Posted by Red__Zed

It does not. The transmission is inversely proportional to received power level.

I've taken one of the fobs apart and actually played with the circuitry. Where do you gather that the transmission level is fixed?

Quote:

Originally Posted by ChrisSlicks

When I took mine apart I didn't identify anything that could control the transmitter power. Are you saying you actually measured the output? I didn't go as far as actually probing the circuit so if that's the case it is interesting. But I'll still keep the key in my pocket and replace the $1 battery when the time comes.

What prompted you guys to dissect your fobs?

Lemers · 01-09-2011, 08:04 PM

Quote:

Originally Posted by LunaZ

What prompted you guys to dissect your fobs?

My FOB is bigger than your FOB

Red__Zed · 01-09-2011, 08:34 PM

Quote:

Originally Posted by LunaZ

What prompted you guys to dissect your fobs?

being an engineer

01-09-2011, 03:51 PM	#1 (permalink)
Lemers A True Z Fanatic Join Date: Mar 2010 Location: Izmir, Turkey Posts: 15,371 Drives: 2012 Traverse LTZ Rep Power: 54	Let me break it do for you. You made a state of putting the FOB in the fobgina will save battery life. I asked it you unlock your door with the physical key to save even more battery life. You said that leaving your key out would use more battery life. That is where I knew you were confussed and decided to mess with you about leaving the key in the door. __________________ 2010 Black Cherry Touring/Sport/Nav Now - 2012 Travese LTZ until I leave for Turkey

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01-09-2011, 06:39 PM	#5 (permalink)
sonic370 A True Z Fanatic Join Date: May 2010 Location: Orange Texas Posts: 1,574 Drives: 09 370Z Sports PGK Rep Power: 20	i don't understand why you didn't get 2 sets of fobs........ your car is to new to get only one.. go back to the dealer and ask them where the second fob is at.