Hi all, I've got some sort of problem with my 2009 R56. When I put my key fob in the slot, I hear clicking from the passenger fuse box. When I start the car with the start/stop I also get some clicking, it starts, but my DSC and Brake dash lights come on in yellow. Then when I press the start/stop button to stop the car, I get more clicking from the fuse box. I've tried using rheingold to figure out this issue, and I keep getting codes involving Terminal 15.


I took these voltage readings from rheingold and it seems the terminal 15 wake up isn't getting as much voltage as the rest, is this normal? I feel like not enough voltage is reaching all of the areas that bring up fault codes, thus, giving out fault codes. These voltages are with the car on, by the way.

 

The symptoms and signs you are describing sound like a dead or dying battery. However, voltage shows 14v and the car starts. Maybe check your earths (grounds). Also, I would jump it from a known good battery, just to check and see if that stops the errors

 

I forgot to mention, this is a new battery, I was having this same issue and the new battery solved it for a couple months. My multimeter shows the battery at 14.2-14.4 when the car is running, depending on accessories, so I don't think this is an alternator issue.

 

check if the plugs are tightly inserted, the fuse box properly screwed to the bracket, and if there is no water intrusion especially if you have a sunroof.

 

Ghost,
I am having the exact issue. Did you resolve your issue and do you mind sharing the solution???

 

rapid clicking from the fusebox is usually a sign of bad CAS/immobilizer. Cloning it usually solves the issue.