SLK 2004. Went out today and all was normal. Came home and tried to lock the car on the fob. The light flashes 3 times but nothing happens. Car starts as normal. Normally it flashes once. Tried both fobs and exactly the same. Bit desperate. I thought the key that starts the engine would lock the door but it does not. Is that usual? I thought I could manually lock it.
Any ideas much appreciated.
Any ideas much appreciated.