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if the computer picks up anything thats on the same freq as its fob it pays attention and does its thing checking that its got the right code to let things start up and unlock and all that fun.
If something comes in on the frequency while its still awake it stops the shutdown cycle with the electronic version of "stay on your toes boys he might be coming back"
I didnt think the bluetooth systems had the authority to keep the system alive after the ignition shutdown had been given
What about using a clamp meter to check the battery current drain while the vehicle is parked & then refer this to LR specs if they can be got hold of.
Check & log current at different times & when parked different places .May give a clue as to what is going on.
I am with Dave all this fangdangled new stuff is fine while it works,but when it plays up,it can be a nightmare for all involved.:(
Hence my question about asking if the owner locks the car overnight. If not it may stay awake thinking the owner is returning. Locking the car shuts it all down. I assume the LR service guys would have locked it so it could be the reason and an easy fix.Quote:
Originally Posted by Blknight.aus
Hi Dave and if my RR is locked, my Bluetooth still remains active until I move far enough away for the connection to sever or after a given amount of time.
But if I don’t lock it, the Bluetooth remains active and I can’t use my phone if I’m less than 25 to 30 metres from the RR and this peeves me no end.
In the case of the D4, if the customers phone was the problem, I would imagine backing the D4 in would not change anything.
When the VE commodore was first released, the automatic light sensing headlights would stay turned on, even after the car is locked from the remote, for about 10 minutes. if it recieves a change in light level in this 10 minutes, it stays awake for a further 10 minutes, keeping the BCM awake. things like flickering fluro lights were keeping BCM's awake and flattening batteries overnight, even after being locked properly.
maybe start pulling individual fuses out over night, and see which fuse in causes the flat battery and take it from there?
I think I'm with Dave on this, Smart meters emit 900MHz and 2.4 GHz radio frequencies (I think key works on 433MHz so maybe not to do with the key freq). I reckon nose in, the signal is strong enough to to get to what ever part of the car is sensitive to it.
I read a thread on a forum a few years ago. It was a P38 that was having flat battery problems. it turned out to be caused by the body ecu would go to sleep as it should, then later it would wake up for no aparent reason. The cause was traced to a house a couple of doors away. It had a monitered alarm system that had a faulty back up battery. The alarm was sending out a signal to some where to alert this fact. This signal was waking up the ecu. When a new battery was fitted to the alarm, the P38's problem was fixed.
Dave.
The bluetooth light on my D4 only stays on after the engine is stopped if a call is in progress, otherwise the phone's bluetooth connection is dropped immediately, as indicated on my phone. However my vehicle only has the base audio and display which uses different bluetooth hardware to vehicles with touch screens, at least for the MY10 vehicles.
so, no, the bluetooth does not have the authority to keep the system awake if locking the vehicle disables it.Quote:
Originally Posted by drivesafe
my next question would be "are they locking the car in the garage?" if not and somethings sending the handshake request procedure for bluetooth (the neighbours xbox/playstation/router is searching for controllers, the smart meter, some solar installation inverters) that'd be keeping the bluetooth awake which may be preventing everything else from going to sleep.
Hi Dave and the owner has tried everything possible, locking, unlocking the D4, turning his phones bluetooth of, turning the phone off, making sure his fob keys were at the other end of the house and numerous other things.
With the Smart meter being installed at about the same time he started getting flat batteries may just be a coincidence but the frequency of both Bluetooth and these Smart meters are in the same range, so if there is a slight difference, parking closer to the meter may be enough to pick up some sort of frequency bleed over.
By simply turning the vehicle around, if the frequency is not that strong, just that slight difference may be enough that the frequency bleed over is no longer strong enough to cause problems.
This would actually make the Bluetooth more likely to be the problem, but I’m not ruling anything in or out.