Remote on keys not working 308

[Pug1]

Hi, i recently replaced the ecu on a peugeot 308 2.0l diesel, 2009. Its all starting and working find but my issue is with the keys now, the keys start the car and everything but the remote on keys will not unlock or lock the car, have tried resetting bsi by disconnecting battery and then holding lock button which switching ignition to on as well as tried programming keys again, no difference.

I am wondering if there is something that should be programmed in the ecu and bsi that i have missed? Does this car have a high frequency receiver and if so, were would it be located?

Thank you

[GiveMeABreak]

Which ECU have you replaced? BSI, Engine ECU, both? The transponder chips in the remote fobs can only be programmed to one ECU, so cannot be coded again.

[wheeler]

Definitely need more info on what was replaced?
Was it an unlocked immo off ECU?
Brand new virgin ECU?
Was it an ECU, BSI & key set?
Are you using your original keys or different ones that came with a set?

The HF receiver is integrated into the comms unit behind the steering wheel. Would think it unlikely there is a problem with this if it was working ok before the changes were made.

[Pug1]

Hi, sorry for the late reply, the only thing replaced was the engine ecu with a virgin one that i programmed in, bsi and everything else is original (was working with the keys previously). I am using the original keys not a new one. Are the keys programmed into the engine ecu also, i thought it was only bsi that held that information and since mine was still original thought it would still work? Do i need to order some new keys ?
Thank you

[Pug1]

Definitely need more info on what was replaced?
Was it an unlocked immo off ECU?
Brand new virgin ECU?
Was it an ECU, BSI & key set?
Are you using your original keys or different ones that came with a set?

The HF receiver is integrated into the comms unit behind the steering wheel. Would think it unlikely there is a problem with this if it was working ok before the changes were made.

Also, it was not an immo off Ecu. After selecting HF receiver as one of the options to the car when programming ecu, it is always saying that there is no communication with it during my fault readings. Did i select the wrong option for the car? There are no others i can see.

[wheeler]

In Europe we almost exclusively use 434MHz. On european versions there is no seperate RF reciever, its built into the comms unit so its totaly normal to see no communication with RF receiver on these.
Some other parts of the world use mainly 315 MHz & they have a separate receiver. Not sure what Australia are on?
As far as im aware the keys are only programmed to the BSI too so not really sure how this has affected it by changing the engine ECU.
Are you saying there was an option to configure RF receiver in the engine ECU. If so that doesn’t sound right.

[Pug1]

In Europe we almost exclusively use 434MHz. On european versions there is no seperate RF reciever, its built into the comms unit so its totaly normal to see no communication with RF receiver on these.
Some other parts of the world use mainly 315 MHz & they have a separate receiver. Not sure what Australia are on?
As far as im aware the keys are only programmed to the BSI too so not really sure how this has affected it by changing the engine ECU.
Are you saying there was an option to configure RF receiver in the engine ECU. If so that doesn’t sound right.

Ok, thank you for the reply, i checked the type of remote i have with ones for sale and it is the 434mhz one. So it must be built into the bsi.

Oh sorry, there is an option in the BSI, not ecu configuration for the hf receiver, which i switched on to try but that explains why there was no communication, as it does not use it on the 434mhz like you said. I also checked in the bsi live data and there is 1 remote programmed to it.
Is there possibly an antenna or something on the bsi that needs to be plugged in? As i did have the bsi out during diagnosis at one point or anything else i can check on bsi?

Thank you in advanced.

[Pug1]

In Europe we almost exclusively use 434MHz. On european versions there is no seperate RF reciever, its built into the comms unit so its totaly normal to see no communication with RF receiver on these.
Some other parts of the world use mainly 315 MHz & they have a separate receiver. Not sure what Australia are on?
As far as im aware the keys are only programmed to the BSI too so not really sure how this has affected it by changing the engine ECU.
Are you saying there was an option to configure RF receiver in the engine ECU. If so that doesn’t sound right.

Oh another thing to mention is that the virgin ecu came directly from a seller in france, so not sure if that has anything to do with the frequency’s but i guess not as the bsi i thought holds that information.

[wheeler]

Can you see live data of the remote control signal? This may be in BSI and/or the switch module at the steering wheel.

[Pug1]

Can you see live data of the remote control signal? This may be in BSI and/or the switch module at the steering wheel.

I have been looking in live data and this is what i found below. I have tried to sync the remote but it never works (ignition on, hold button on remote 10 secs and then let go and switch off and wait 30 seconds). Does nothing.

[wheeler]

I mean can the diag see the remote being pressed? You may need to look in the live data of the switch module at steering wheel.

[Pug1]

I mean can the diag see the remote being pressed? You may need to look in the live data of the switch module at steering wheel.

Missed your reply sorry, tried looking in switch module live data and did not seem to see any difference when pressing and not, maybe it is the remote that died after all suddenly, needed an RF tester to confirm. Do you know if a 2009 peugeot 308 will need an FSK or ASK remote, as the suppliers of remotes all have two options, i have read earlier than 2011 is Fsk? But not sure.

[wheeler]

I reckon this should be FSK