Experiencing issues with your 2009 Volvo S40 key fob? It can be incredibly frustrating when your remote suddenly stops working. You’re not alone. Many Volvo S40 owners encounter key fob problems, and this guide aims to help you troubleshoot the issue. Let’s delve into the steps you can take to diagnose and potentially resolve why your 2009 Volvo S40 key fob is not working.
It started subtly – one of my key fobs for my Volvo S40 just stopped responding. Initially, I thought it was a simple fix. My first step was to replace the battery in the malfunctioning key fob. However, even with a fresh battery, the key fob remained unresponsive. Luckily, I had a second key fob that was still working, so I wasn’t completely stranded.
Then, the unexpected happened. Just a week later, my second, previously working key fob also failed. Suddenly, both remote key fobs for my 2009 Volvo S40 were not working. This definitely felt like more than just a coincidence.
Thankfully, the mechanical key blade still works to open the car, and the chip key allows me to start the engine. The central locking button inside the car also functions correctly, confirming that the central locking motors themselves are likely not the problem. This pointed towards an issue with the remote signal reception rather than the car’s locking mechanisms directly.
To investigate further, I had the key fobs tested by an auto electrician. The test confirmed that both key fobs are indeed transmitting the correct signal. This eliminated the possibility of the key fobs themselves being completely faulty in terms of signal transmission. The problem seemed to lie within the Volvo S40’s ability to receive and interpret the signal.
Connecting my Volvo S40 to VIDA DICE, the Volvo diagnostic system, revealed no fault codes related to the key fob or remote locking system. This lack of diagnostic codes unfortunately didn’t provide any immediate clues. I proceeded to check all relevant fuses, ensuring none were blown, but they all appeared to be in good condition. As a next step, I even replaced the RRX (Remote Receiver) module, hoping it was the source of the problem. Unfortunately, replacing the RRX module also did not resolve the issue; the 2009 Volvo S40 key fobs were still not working.
Adding another layer to the mystery, I noticed that the driver’s door lock “pop-up” feature, which normally activates when removing the key after stopping the car, is no longer functioning. This might be a related symptom, possibly indicating a broader issue within the car’s security or central control system.
At this point, I’m still searching for a solution and welcome any suggestions or insights. Dealing with car issues can be frustrating, and I’m determined to resolve this 2009 Volvo S40 key fob problem.
