Key fob not workin

2016 Peugeot 2008 Gti
Car: Peugeot 2008
Year: 2016
Variant: Gti
Categories: Electrics, ECU, Warnings & Lights
Remote control not operating crrectly to lock or unlock vehcle
Problem added: May 10, 2023 (9 months ago)
Tried changing the battery in key fob ?
Answered May 10, 2023 (9 months ago)
Thankyou for your reply. Both original key fobs not working. New batteries fitted but problem still exists.
When locking vehicle using key only, the rear doors don’t lock and car alarm sounds shortly afterwords. Reset both fobs as per handbook instructions but no success.
Any suggested fixes will be appreciated.
Answered May 10, 2023 (9 months ago)
Car battery not low on voltage ? had that a few times with various makes of car causing similar fault . Often disconnecting a battery terminal can " reboot " the system but occasionally may cause problems

From elsewhere on the problem , might / might not help

Faulty receiver module
Peugeot 2008 has a remote keyless system receiver that receives radio frequency signals from the key fob. If none of your key fobs work, and and you can’t reprogram the keys, it is possible the receiver module has developed a fault.

You may have to perform further diagnostics to identify the faulty. The keyless entry antenna could be damaged, or the module is just not communicating with other modules on the vehicle. In these cases an OBDII scan tool can be used to verify if the commands are being transmitted and acted on by the security module.

Reset the system
If the key fob is not working due to a glitch in the keyless entry system, it may be possible to restore the functionality by resetting the keyless entry system in your 2008.

Disconnect both negative and positive terminals of the 12 volt battery.
There isn’t any button or option to reset the keyless entry system in 2008, but you can reboot all the on-board computers by disconnecting the 12 volt battery for a few minutes. Remove the cable from the negative terminal of the battery first, then from the positive terminal. With the battery disconnected, press the horn button a few times and turn on the headlights to drain out all the residual electricity from the system. After about 15 minutes, reconnect the battery in reverse order: positive cable first, then negative cable.

Use OBD2 scanner for diagnosis
Since Peugeot 2008 is equipped with on-board diagnostics (OBD), a fault diagnosis can provide initial indications of where the malfunction is located. This method will be especially useful when diagnosing a faulty remote keyless system receiver module.

OBD2 scanners are now available in various designs. You can use a standalone diagnostic device (shown above) or get an OBD2 adapter that connects with a smartphone app via Bluetooth or WiFi.
To begin troubleshooting, you must first connect the diagnostic tool to your 2008. The OBDII connector is usually located under the dashboard. With the tool connected, turn on the ignition. Most diagnostic devices then ask for some information about the vehicle. It is important that you enter this 100% correctly, otherwise the result of the search may be inaccurate. In addition to the vehicle make, model, and engine type, you usually also have to type in the Vehicle Identification Number (VIN). Since some OBD codes are manufacturer-specific, the scanner will be able to give you more accurate information if you enter more details about your 2008.

There are many reasons why your Peugeot 2008 key fob is not locking or unlocking the doors. When looking for the reason, you should start with the most obvious cause that is easy to diagnose: dead coin battery, which you can replace in a few minutes.
Answered May 10, 2023 (9 months ago)

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