Peugeot 207 key fob not working

**Keyblade** · 13th July, 2021, 05:36 AM

Originally Posted by rapidlocksmiths

i didnt understand this either ,

saw non original chip on board ? are you saying seperate chip stuck on board ?

they cant have transfered the chip from the remote key to the manual key , as the chip on the remote key is intergrated , ie it is part of the circuit board , soldered to the remote board with an antenna as well , when antenna breaks the car cannot see key , so non start , the cowboys clone a chip from the manual key and stick it to the board or in the remote case .

the remote will not work when the ignition is on at all

My mistake, i mean it not original antenna on board. Maybe signal is weak or something, i got signal on KD900 but...?

**Zmann** · 13th July, 2021, 06:02 AM

Originally Posted by Keyblade

Its old one, rectangular 0523 remote.

My mistake about not original chip on remote board, i mean it not original antenna on this key board. maybe that's why i cannot re-sync this key (bad antenna)

The rectangular is new one ! The 207 with hart-shaped-keys are on early 207 cars which may not seem common in some market I think !

**lion0304** · 13th July, 2021, 08:48 AM

Remote key work before changing battery, after didn't. So the problem is between.

I've never need resync this rectangle remote just after changing bettery. Even after full repair the PCB , rarely need resync.

So the problem is during your changing battery, you dammaged the remote.

**rapidlocksmiths** · 13th July, 2021, 09:51 AM

yes the issue is either the remote is damaged during battery change , though you have to go some to break these or a less obvious issue as detailed earlier in thread , also coincidental faults occur .

as stated check for non original transponder chip stuck to board or seperate in case .

does the key read in cloner as correct chip ?

does the remote give the correct 433/434 mhz signal ?

FYI the antenna on the key is for the transponder to start engine and not for the remote control part , the crucial thing is that the transponder and the remote are a correct married pair , if not the key cannot resynch .

you need to check , once you have ruled out these issues , then as working when you changed battery it will be down to you to fix or replace , even on coincidental faults , we all get these , but if working when it came to you then it needs to go back working , this is why i asked if you had tested it fully , as customers often have you over in an attempt to save money .

check battery voltage on car and ensure not in economy mode , apply support if required , also check the battery you fitted as wont be the first new battery to be low voltage

since the emergence of so many messers doing car keys with no experience and no idea about keys and immobiliser systems , ongoing issues are getting more common , with so many cloning rather than coding proper keys , many are getting caught when clone key wont go back into system when new keys needed , on psa some are getting caught out with clone chips in keys when antenna fails , and im seeing far more chips taped to ignition , this is the legacy of the price cutters and those pretending to be auto locksmiths , and a new cross we must bear and work around.

**Keyblade** · 13th July, 2021, 10:08 AM

Originally Posted by lion0304

Remote key work before changing battery, after didn't. So the problem is between.

I've never need resync this rectangle remote just after changing bettery. Even after full repair the PCB , rarely need resync.

So the problem is during your changing battery, you dammaged the remote.

I checked the signal with KD900 after battery change and remote work ( got frequency 434 and ASK modulation info )

Remote chip also start the car i tried it and car starts, but i cannot resync remotes to work again.

**rapidlocksmiths** · 13th July, 2021, 10:14 AM

so you checked signal after battery change , and key starts the car , remote should have continued working then without resynch being needed.

again check board and case to confirm intergrated chip and not a bodged seperate clone chip .

read the key in your cloner to confirm correct chip can be seen , if no chip can be seen by cloner and key still starts car then possibly chip taped to ign.

check battery voltage on car and check battery you fitted is good too and car is not in economy mode.

check fuses , does internal central locking button work ?

you can try battery reset if following the 4 minute rule

if no joy and key was working prior to battery change then take it on chin and replace key

**rapidlocksmiths** · 13th July, 2021, 10:18 AM

why did the customer bring the remote key to you for battery change ? most dont till remote stops working altogether , so if remote working as it should be then what made them decide to change the battery ? or was there a problem wit the remote working intermitently or not properly , so they self diagnosed the battery ?

**Keyblade** · 13th July, 2021, 10:31 AM

Originally Posted by rapidlocksmiths

why did the customer bring the remote key to you for battery change ? most dont till remote stops working altogether , so if remote working as it should be then what made them decide to change the battery ? or was there a problem wit the remote working intermitently or not properly , so they self diagnosed the battery ?

He bring remote to change broken key fob,when i changed key fob i changed also battery..

**rapidlocksmiths** · 13th July, 2021, 10:37 AM

change fob ? do you mean a recase , you fitted a new case to existing remote board and battery ? or you changed remote fob ?

i will assume you recased existing remote fob/board , so you changed casing and battery , did you check condition of micro switches , battery connections and verify intergrated chip and not a seperate transponder stuck on board ?

in that case then if voltage in your key battery and voltage on car are all good , car not in economy mode and internal central locking button is working still , then its possible you have damaged board somehow during case change so need to replace the key , use kd NB remote 0536 ask , as if a car issue you can at least reuse the key on another car if still fails .

if unsure whether chip on board is wrong post a picture of the board

**godfathertwo** · 13th July, 2021, 02:31 PM

I check each battery with a voltmeter and ask questions first I have been to job where customer changed battery and damaged board also to lots where they fitted battery upside down
They go in you tube than think
They can program keys or Remotes
Themselfs so and they always lie and always ask is anybody tampered with car or remote or flat battery.

**Keyblade** · 14th July, 2021, 09:49 AM

#rapidlocksmiths you were right from the beginning, previous locksmith glued chip near the barrel lock, he was lazy to put chip in reserve key case.
I removed the chip and programed key in 5 seconds, then moved this chip to reserve key case and glued it inside....

All the trouble because of laziness.

Thanks again rapilocksmiths...

**rapidlocksmiths** · 14th July, 2021, 10:06 AM

you will see much more of this due to the amount of facebook experts and bodegers doing car keys with no system or trade knowledge , all in a bid to drive the rates down .

as more and more people clone keys rather than properly code keys you will encounter more and more issues in future , for them to earn enough for a packet of cigarettes on a job , it will cost you more than they earnt to put there mess right .