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Old 05-23-2019, 02:39 PM
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Join Date: Jul 2007
Location: Chicago, IL
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Originally Posted by mejim707 View Post
BGM, if you take care of her she'll take car of you! These are fantastic vehicles. Sure I've had a number of repairs, but nothing too bad or overly out of the ordinary. And if you're able to do your own work it doesn't cost much. For a car like this, and no car payment, I couldn't be happier.

A few notes,

1. Change oil every 5k or less! Don't go by the 16k (absurd) recommended BMW interval.. Never use 'high milage' oil. It can destroy your seals. Always use recommended synthetic. I use Castrol Syntec 5w30.

2. If a plastic coolant part breaks, only use approved BMW coolant. Never the basic stuff. It's acidic and can cause premature breakdown of your plastic coolant parts.

3. Get your coolant changed at BMW if you have not already. They use a fluid with treatment during the flush that will breakdown and remove sediment in the system. This is very good as it protects the functionality of your heater core. If you wait you risk the core getting clogged and your cabin heat failing. You don't want this if you live in cold areas. And it could cost $6k to fix / replace the core. A ~$100 flush at BMW is very worth it!

4. p0012 and p0015 are typically Vanos related. It's easy to resolve. I'll link below. Usually it's just a cleaning required. Top Vanos is intake (p0012) and the bottom is exhaust (p0015).

5. p0420 and p0430 are the infamous cat codes of death. You don't want to have to change your catalytic converters on a BMW. I was quoted $3200. You can use the following to fix this for $5 - $10. And your vehicle will still pass emissions. I didn't see a reduction of gas mileage after doing this. The first link shows you how to remove the 02 sensors. You'll then install the spacers also linked below and reinstall the 02 sensors. Poof, codes are gone!

6. The spark coils go on these from time to time. They're about $45 each at Auto Zone but you could preemptively purchase a pack of 6 on Amazon and keep them with you. You notice jerking acceleration / misfire when one fails. The codes are P0301 (Front / Radiator) - P0306 (Back / Firewall). Simply remove the decorative cover over your head. Each coil has a connector with a pull up clip. Unlatch the clip and pull the coil out. It could take 5 minutes and will spare you a tow or very troublesome drive. Personally, I would replace them all now and keep a few in the car for later just in case. A small tool kit including a set of allen keys is a good idea.

7. At 100k it's a very good idea to look into getting your Transmission fluid changed. This should prolong the life of the transmission. You may also consider replacing the fluid in your transfer case. If you wait the transmission could fail early. Or, if you change the fluid later it may start slipping or be unusable.

Just a few thoughts. I hope it helps your beast from turning to dust!
Thanks for the information. I'm just kidding about mine turning to dust--it's in great condition. As far as your list, I've recently had the spark plugs and coils done, transmission cooler and fluid. coolant replaced (I also had a new transmission put in under CPO that would have been like $12K). Haven't had the cat codes or vanos yet (and valve stems are still good--though I know this will have to be done at some point).
2008 X5 4.8
Jet Black/Black Nevada/Dark Burl Walnut
Adaptive Drive
Premium Pack
Tech Pack
Climate Pack
Sport Pack
20" Wheel Option
Premium Sound
Sirius Satellite
Rear DVD Entertainment
Multi-Contour Seats
Comfort Access
3rd Row Seat
Heated Front Seats
Running Boards
3M VentureShield Paint Protection Film
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