Hi guys,
I just a full system installed at SoundMaster (HU, Split, Amp, Sub). The head unit is Deh6850MP, everything was great except that, the Head Unit won't turn off after I switch off the Engine and continue to play. The guy at the shop told me it was something to do with the design of the new Head Unit. They said the HU only requires a very very small amount of power to function. So after switching off the engine, there will be some power stored in the HU, which keep it running. (Car is Peugeot 307, year 2003)

I found this to be quite strange and maybe they wire the Unit to the battery incorrectly? Anyone with simialar problem or solution please help.. Cheers.

yeah i got one of these HU's too... no installed yet but from my knowledge of the HU i think u gotta hold down the Source button for a few seconds for it to shut down the HU... also isnt it like that on most HU's?

neway c if that works

When you say that you turn the engine off, do you still have the ignition switch on "accessories" .... or do you turn the whole thing off and remove the keys and the headunit is still on?

also when it stays on does it stay on for extended periods after shutoff of the car,

sounds like the acc wire is wired to constant power

Yeah ..... I'm thinking the same thing.

Engine is turn off + key removed. The HU will still play for another 5-10 mins then it will turn it self off after that rough period of time.

(Corona Man) - Yes you can still swtich off the HU manually by holding down the button, but it SHOULD also shut down imediately after power is off.

One more strange thing is when the HU is turn off (5 mins after the power is off). When I open the door and the door light turn on (Power inside the car), the HU will also switch on automatically without having to start the engine. Will this waste my car battery since all Sub the Amp are all operating (Full mode)?

I really have no knowledge about wiring system but as I mentioned earlier, SoundMaster might have wired my system to the wrong power source/spot??

Any help is appreciated.

if acc was wired to constant then your stezza wouldnt turn off at all, I have no idea why it would do that it sounds absurb.

As you can imagine your battery power willbe used moreso depending on volume. Im just puzzled that it would turn off after that long :S

hmmm very wierd

Perhaps it's wired to your "room" circuit, which your immobiliser holds "live" for 5-10 minutes after car turns off (who knows why).

It does appear to be odd. Maybe they just couldn't find the proper "accessories" and are tapping off something that is partially related to accessories.

For example, my headlights switch off when I open my door after the ignition is turned to off. But if i turn it back to accessories, the headlights come straight on.

So they could be plugged into an advanced relay network that wasn't really intended for the H/U. Sounds like a Room or Lamp circuit.

Could this be because of Peugeot? I did noticed once before with my old system. I had the stereo running when the car key is half turned (car not started). Stereo will play for a while then the car Economy mode will function and then switch off the stereo. If this is the case, then I suspect they did wire the system to the main power? Is this easy to fix or maybe it was something else? If this is the case, how can I check before taking it back to the shop?

I agree with this, they haven't found an appropriate acc. source of power. The original car stereo acc. wire should be the one to use.

No, i dont think anything can be blamed on the make of car you have, as stazed and reefhog have pointed out the acc wire has to be connected to something unsuiatble for this application.

my question is for stazed tho, does the room circuit stay active while the car is running as you dont have anything running off it at that time eg interior lights etc.

do a quick test yourelf norton get out of the car and lock it does the stereo turn off when the interior light does or not?? that should tell u whether its on the room circuit as stazed has sugested

Thanks for your feedback Killalown. The stereo doesn't turn off straight after the interior light goes off. It will continue to play for a while after that, then go off. But as mentioned earlier, it will turn on when the interior light turns on (when opening the door etc).

So is this a fault on installation as if it is then I should be able to get them to rewire it without charge?

how long after the interior light does it take??

as far as getting them to rewire it, it sounds like they are already making excuses by saying its the unit design so i dont know whether they will fix it.

but yeah it does sound like installation fault

Its about 5 mins after. I'm just worried that if I forget to turn off the stereo manually, it will drain off my main battery.
I'll see if I can get them to have a look at it for me without charging me again.

yeah that sounds like your best plan they should do something about it hopefullly

UPDATE and more Questions.

Hi guys, I took my car back to Soundmaster on Sat and was told similar story as before. This time, the guy took out the HeadUnit and check the power after the engine is switched off. The result was not surprising, there were still power running in the wire for about 2-3 minutes after taking out the key. Once the power is completely gone, we open the door to see if power will be on. And yes! power again for about 2-3 minutes. I told the guy at the shop that it is the power of the interior system. He then explained to me which I still don't belive was that, this wire is the original wire that was used with my original HU and it is the only power source available there (Even though I saw plently of other wires). So he asked me to take my old HU back to him so he can refitted and show me its the design of this car and not the installation problem.

so my Questions are -
*Does anyone know how many POWER cables source are there behind the stereo for Peugeot 307?
*Are there a seperate Power just for the stereo?

(I guess I have to take my car back again during the weekend - What a PAIn and a waste of my weekend!!! )
Thanks for your help!

You should've taken it to someone who knows what they're doing.

Time to take the car elsewhere... where are you located, I will tell you the nearest shop who can fix it for you and not say "we're too lazy to find the right wire or even run a new wire if need be".

An installer should be able to find another accessory and constant power wire anyway, tell him to put some more effort in

I have been told that if it was a Eurovox unit it should be pretty easy to see which wire is which on the stock plug.

Also, that it is usually a blue wire on peugot's that is the accessories.

Either way though, I'd still take it to a shop that knows what they are doing.

I loved to take it to another shop but I've already paid for the installation so I should get it done properly with out being charged more $$$$. I told the guy that if he can't fix it, let me take it to other shop and get it fix then I'll bill him. He said, he'll try to fix it but I have to bring back my old HeadUnit to prove it first that it should be working. Anyway, I'll take it back once more timebut if he still insist that its not the installation fault. Then, I'll get it fix else where and make him pay for it.

Someone I know found this elsewhere:


Might explain something

More stuff straight off a Peugot forum:

Hey, thanks stazed! So this mean the wiring to the stereo was correct and I guess I have to live with it then. If this is how the car manufactued then too bad for me then!

I disagree, a knowledgeable installer can integrate it with CANBUS.

Contact Fhrx http://www.fhrxstudios.com/
or Precision http://www.precisioninstallations.com.au/

and they will happily discuss with you the specifications of your Peugeot and what is required. Your sytem can be "perfect" but your installer needs to know what they are DOING!

Do you know how much it would cost roughly? I don't want to pay $hundreds... just to be able to get my stereo to switch off automatically.
What is a CANBUS anyway?

Paul Graham, Precision Installations - courtesy of InCar magazine.
I can't quote you for fixing it. Don't settle for crappy installation. Find a better store

Nice one stazed.

it sounds like not only the installers suck, but the salespersons in there suck as well

the 6850 does not normally stay on, and power is meant to be running to the head unit, every head unit is wired up to a constant power

normall the only thing that happens is that after you turn off the ignition, the unit completely turns off, then it beeps to annoy u to take out the face, then the face automatically pops out and stays out till you take it out, if not then after 10 seconds it closes

i mean, sure the car is difficult, but cmon, u could have at least take out the unit, put the car back to how it was and then say to the customer that they cant do it than lie to the customer saying thats how it normally is

I got the impression, that if you plugged the std stereo back in and switch off the function THEN remove it all will be fine?

I'm not sure what u meant by this but I'm taking the car back to get it FIX! (hopefully) tomorrow. I'll post up the result once done.

Same store?
They've already said they can't fix it.... what's changed, did they have a read of CAA and learn something?

hahahaha

i don't know anything about the factory peugeot head unit but why would they want it to stay on for that long for from factory? if you can i'd take the unit out and check the wires yourself. multi meters are real cheap- i just got two for one-13 bucks! from dick smith. you'll use it more than you think especially if you would like to start installing your own systems one day-or fixing 'profesionals' stuff ups! don't be affraid to have a go at things yourself and listen to the advice you get from the guys on this site. realy the worst you can do is maybe blow a fuse! if they don't fix it at least they will have a bad rep through this site!

keep us informed

Joe Dont comment on sales people when you can be considered in the same position....as i know you wouldnt have picked it.

It sounds like there might be a inline cap (small one)on the acc line, some makes of cars have them in line on the acc wiring, some subaru for one.


im not 100% sure why but this will hold the acc on longer after the car has been turned off, thus keeping the H/U on until it has lost charge \ droped below 11volts & acc switching on h/u's dont need much current.

If the factory Pug deck requires more current to turn on (acc) they might run a small inline cap or it might be so that when the car turns off if it runs a factory amp (elsewhere in car) it the unit will remain on for a moment longer than the amp to eliminate turn off POP (and if it has a higher current draw it might not take 2-3 mins like the pioneer)

Id be tracking that acc wire further up the harness and see where it goes and if there is a cap (small one) inline.

Most good workshops should know this if the fitters been around a while.

hasnt stazed already answered this

im commenting on how the salesperson stated that "it was something to do with the design of the new Head Unit. They said the HU only requires a very very small amount of power to function. So after switching off the engine, there will be some power stored in the HU, which keep it running."

not only am i certain that no head unit "normally" keeps running after the ignition turns on, but i can 100% confirm that the 6850 doesnt either because i have one too

im stating that the salesperson shouldnt bullcrap to the customer for the sake of not fixing the job... if he sold a unit to another customer with the same car and that was happening, and the customer was gullable to believe it and kept the unit with the power running for 10 mins after turning off the car... well thats not a very honest practice now is it???

lucky the thread creator was suspicious and checked with us, now the smart people on this forum has pinpointed that its got something to do with the car, and any good installer (including the ones in the store i work in) would have picked up on it too and figured it out as well

maybe it's wired off the dome light circuit - the light fades out over time, but maybe doesn't fully discharge for a while after.


maybe it's wired off the dome light circuit - the light fades out over time, but maybe doesn't fully discharge for a while after.

or maybe its like stazed said and u have to get the oem unit turned off b4 u wire in a after market unit

Just an UPDATE guys, I took my car back to get the problem FIXed today. (A new installer this time - YEAH!!). Well after some testing, he said the same thing as the other guy which was something to do with the design of the car (HMM.. BAD). But, I argued with knowledge I learnt from this forum (which I plenty, so thank you all). I said there should be 3 power sources and one should be dedicated for the stereo etc. Well, I wont' get into too much details but basically the reason why they couldn't find other power sources was because when they test the power, they were looking from the extension cable they installed initially (DUH~). After showing me this, I asked the guy to test for power from the original wiring - Then WOOHOOO there were 3 wires that has power and one of them turns off after switching off the engine!!!! So he rewired the cable, and there you go, problem is fixed. (So simple,...... BUT!!!...so much trouble)


Conclusion (for people with similar problem)
If your after market stereo doesn't turned off when you switched off the engine. Then it probably was hooked to the wrong power source. There should be 3 power sources behind your stereo, one for accessories, one for your stereo and another one for... hmm.. I don't know too! ............ Yeah.. why 3??

Anyway, Thank you alll for the help!! It was such a useful information!! Very Happy. Thank yoU!!

good work chief always good to see some resolution on these things

yaaay

i hope u are enjoying the unit its a sexy unit at night time

oh btw have u found a 2.5mm stereo to 3.5mm stereo adaptor anywhere??? I CANT FREAKIN FIND ONE ANYWHERE!!! AND IVE BEEN TO 4 DICK SMITHS ALREADY!!!

http://www.dse.com.au/cgi-bin/dse.storefro...duct/View/P6646

Seems to be available damn-well everywhere

Buy it online if you're desperate.

Needs to be a right angle one or with a smaller plastic part around the plug as if you have the surround on the deck it wont fit in...

yer, silly pioneer and their designs, dunno why they didnt just do a 3.5mm jack in a more convenient spot

hmm, 4 bucks parts, 7 bucks postage...........

lets seee

Burwood DSE
Macquarie Centre PowerHouse

they say avaliable now, but everytime i go there they aint got none

i'll check macquarie centre tomorrow again...

and compatibility isnt really an issue, i'll just run the player with the front panel open... i thought thats how its meant to be connected in the first place...