Yup, That's the one.
Now, the only thing I'd add from personal experience; have your battery checked and do one of two things:
1. Replace your battery if it's too weak.
2. Get a trickle charger and recharge the batter for 24 hours at 2Amps.
When my final stage resistor went, within the 3 weeks it took for me to see a pattern in the battery being drained, take it to the dealer, spend a few hundred on the dealer to tell me that the car is fine, and then take about 4-5 days to figure it out and fix it on my own thanks to the X5world forum, well, in that time the battery took a beating of being completely drained many many times.
So the local indy battery shop told me to replace it because the battery is weakened or at least give it a 24 hour charge (as opposed to driving it around for 30 minutes to recharge it).
Btw, IMO getting a trickle charger is money well spent if you get proper cold winters.
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