03 M45 KEYFOB QUESTION

[scottsm45]

Just bought this car this week and I have the factory key fob, but the guy was too cheap to buy the key that actually goes inside the keyfob, so he has the keyfob that unlocks everything and locks it, and then seperate keys for the ignition. My question is because he doesn't have the masterkey that goes inside the keyfob, is this the reason when I put the car into park, it doesn't lock automatically and then when I turn the car off, it doesn't unlock automatically? I had a lexus gs430 and loved that feature on my car, does this car not have that feature or do I have to have that $500 key in order to get that feature?
Thanks,
Scott

[Larz]

I doubt that the missing key inside your fob is the cause of anything. The option to have the doors lock / unlock is controlled by the car, not the key or the key fob. There was a post a while back about how to switch this feature on and off. I tried this on my 2007 and it didn't work. I reckon it only works if your model year had this option to begin with. I C&P'd the post below. Give it a go and see it works for you.

Re: Auto door locks
by M56Cruizin » 30 Jan 2013, 17:04
Turns our this CAN be done.. For anyone who searches this topic, here are the details:

AUTOMATIC DOOR LOCK/UNLOCK FUNCTION (LOCK OPERATION)
The interlock door lock function is the function that locks all doors linked with the vehicle speed or shift position. It has 2 types as per the following items.
Vehicle Speed Sensing Auto Door Lock
*
All doors are locked when the vehicle speed reaches 24 km/h (15 MPH) or more.
BCM outputs the lock signal to all door lock actuators when it detects that the ignition switch is turned ON, all
doors are closed and the vehicle speed received from the combination meter. via CAN communication
becomes 24 km/h (15 MPH) or more.
P Range Interlock Door Lock

All doors are locked when shifting the selector lever from the P position to any position other than the P position.
BCM outputs the lock signal to all door lock actuators when it detects that the ignition switch is in the ON position and the shift signal received from the TCM via CAN communication is shifted from the P position to any
position other than the P position.
Setting change of Automatic Door Lock/Unlock Function
The lock operation setting of the automatic door lock/unlock function can be changed.
With CONSULT-III
Refer to DLK-32, "INTELLIGENT KEY : CONSULT-III Function (BCM - INTELLIGENT KEY)".
Without CONSULT- III
The automatic door lock function ON/OFF can be switched by performing the following operation.
1. Close all doors (door switch OFF)
2. Turn ignition switch ON
3. Press and hold the door lock and unlock switch for 5 seconds or more in the “LOCK” direction within 20
seconds after turning the ignition switch ON.
4. The switch is complete when the hazard lamp blinks.
AUTOMATIC DOOR LOCK/UNLOCK FUNCTION (UNLOCK OPERATION)
The automatic door lock/unlock function is the function that unlocks all doors linked with the key position or
shift position. It has 2 types as per the following items.
IGN OFF Interlock Door Unlock
*
All doors are unlocked when the power supply position is changed from ON to OFF.
BCM outputs the unlock signal to all door lock actuators when it detects that the power supply position is
changed from ignition switch ON to OFF.
P Range Interlock Door Unlock

All doors are unlocked when shifting the selector lever from any position other than the P to P positions.
BCM outputs the unlock signal to all door lock actuators when it detects that the ignition switch is in the ON
position and the shift signal received from TCM via CAN communication is shifted from any position other than
the P to P positions.

Setting change of Automatic Door Lock/Unlock Function
The unlock operation setting of the automatic door lock/unlock function can be changed.

The automatic door lock/unlock function ON/OFF can be switched by performing the following operation.
1. Close all doors (door switch OFF)
2. Turn ignition switch ON
3. Press and hold the door lock and unlock switch for 5 seconds or more in the “UNLOCK” direction within 20
seconds after turning the power supply position ON.
4. The switch is complete when the hazard lamp blinks.
*
: This function is set to ON before delivery.
OFF → ON : 2 blinks
ON → OFF : 1 blink

[scottsm45]

I doubt that the missing key inside your fob is the cause of anything. The option to have the doors lock / unlock is controlled by the car, not the key or the key fob. There was a post a while back about how to switch this feature on and off. I tried this on my 2007 and it didn't work. I reckon it only works if your model year had this option to begin with. I C&P'd the post below. Give it a go and see it works for you.

Re: Auto door locks
by M56Cruizin » 30 Jan 2013, 17:04
Turns our this CAN be done.. For anyone who searches this topic, here are the details:

AUTOMATIC DOOR LOCK/UNLOCK FUNCTION (LOCK OPERATION)
The interlock door lock function is the function that locks all doors linked with the vehicle speed or shift position. It has 2 types as per the following items.
Vehicle Speed Sensing Auto Door Lock
*
All doors are locked when the vehicle speed reaches 24 km/h (15 MPH) or more.
BCM outputs the lock signal to all door lock actuators when it detects that the ignition switch is turned ON, all
doors are closed and the vehicle speed received from the combination meter. via CAN communication
becomes 24 km/h (15 MPH) or more.
P Range Interlock Door Lock

All doors are locked when shifting the selector lever from the P position to any position other than the P position.
BCM outputs the lock signal to all door lock actuators when it detects that the ignition switch is in the ON position and the shift signal received from the TCM via CAN communication is shifted from the P position to any
position other than the P position.
Setting change of Automatic Door Lock/Unlock Function
The lock operation setting of the automatic door lock/unlock function can be changed.
With CONSULT-III
Refer to DLK-32, "INTELLIGENT KEY : CONSULT-III Function (BCM - INTELLIGENT KEY)".
Without CONSULT- III
The automatic door lock function ON/OFF can be switched by performing the following operation.
1. Close all doors (door switch OFF)
2. Turn ignition switch ON
3. Press and hold the door lock and unlock switch for 5 seconds or more in the “LOCK” direction within 20
seconds after turning the ignition switch ON.
4. The switch is complete when the hazard lamp blinks.
AUTOMATIC DOOR LOCK/UNLOCK FUNCTION (UNLOCK OPERATION)
The automatic door lock/unlock function is the function that unlocks all doors linked with the key position or
shift position. It has 2 types as per the following items.
IGN OFF Interlock Door Unlock
*
All doors are unlocked when the power supply position is changed from ON to OFF.
BCM outputs the unlock signal to all door lock actuators when it detects that the power supply position is
changed from ignition switch ON to OFF.
P Range Interlock Door Unlock

All doors are unlocked when shifting the selector lever from any position other than the P to P positions.
BCM outputs the unlock signal to all door lock actuators when it detects that the ignition switch is in the ON
position and the shift signal received from TCM via CAN communication is shifted from any position other than
the P to P positions.

Setting change of Automatic Door Lock/Unlock Function
The unlock operation setting of the automatic door lock/unlock function can be changed.

The automatic door lock/unlock function ON/OFF can be switched by performing the following operation.
1. Close all doors (door switch OFF)
2. Turn ignition switch ON
3. Press and hold the door lock and unlock switch for 5 seconds or more in the “UNLOCK” direction within 20
seconds after turning the power supply position ON.
4. The switch is complete when the hazard lamp blinks.
*
: This function is set to ON before delivery.
OFF → ON : 2 blinks
ON → OFF : 1 blink

thanks for the info, but tried those things, nothing worked =(

[Double E]

I think the info Lars gave was for a 2nd gen M45. (Non Y34) I think this feature is not available on the Y34. I'll take a lok in a few mins & let you know.

On another point, I'm confused when you say you have the key fob but no master key. The ignition will not start using the metal key that opens the door in the ignition. it sounds like the PO lost the "cut" key (it did come with one) and you're forced to use the fob for everything, right?

I'll explain your key system and then you tell me what you have...
In the fob there are normally two important items; one is the traditional (cut) key that can be used to open the door and trunk (you know where the trunk key hole is right?) That cut key will also fit in the ignition and turn it to the On position, but will not start the car....because of item #2. They key is stored in the fob and is use din case the battery in the fob is dead and you still need to get into the car. It also allows you to put the fob on your key chain when the key is also inserted into the fob.

#2 is the actual transponder that rests inside the key fob. If you were to change the battery in the fob and a little piece of black plastic fell out while you were not looking, the fob becomes useless other than to lock or unlock the car. Note to self...do not lose that little piece of black plastic. it's got a thickness of a 50 cent piece or a bit more and has sort of a trapezoidal shape with some variation. It rests inside the fob...loosely, and is ready to fall out at any moment when the fob is opened. other note to self, the transponder is not available for purchase seperately and requires a new fob (over $400).

The probem you have (it sounds) is that the cut key is missing. You can get a blank cut at a dealer for cheap or look on e-bay for a blank being sold and a dealer or competent lock smith should be able to cut one for you. Don't bother having a hardware store key cut as a spare. They do not work. Tried it.

When you get this sorted, get a new battery & super glue the transponder in the fob...

[Double E]

Confirmed. That auto door lock feature is not on the Y34.