What kind of mileage do you guys have on your 545/550s? Probelms alon

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Dec 1, 2009 | 11:14 AM

#11

Bimmerchop69

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Joined: Nov 2009

Posts: 192

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From: New Jersey

My Ride: 2004 BMW 545i 6mt, Titanium Silver, Sport Package, Winter Package

Quote:

Originally Posted by dawid_w' post='1065738' date='Dec 1 2009, 12:47 PM

Are you sure that it is the head gasket? That would be very strange wit 68k miles... Maybe water pump or water hose leak.. Do you have oil in the coolant? Or do you have coolant in the oil?

Regarding the pressure regulating valve. In my case the engine was rough on start. At the end it got really bad.. And finally the emission light came on (Service engine soon + increased emission)

Well im not exactly sure if it is the head gasket but its definetly burning the coolant. Im dropping it off later at the mechanic so he can see what is wrong. Ill check later if there is any oil in the coolant. thanks for the info. I hope its not a cracked head on block but either way the dealer better pay up for it. Does BMW cover engine failure at that milage? or is it up to 50k miles?

Dec 1, 2009 | 01:06 PM

#12

jm545i

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Joined: Feb 2008

Posts: 337

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From: NYC

Quote:

Originally Posted by TTA89' post='1065787' date='Dec 1 2009, 02:40 PM

That is a lot of brake boosters..... Odd..

I have almost 61K and I put a battery in it last month. Other than tires, brakes, and a couple softrware updates I haven't had any issues.

+1, I currently have 45k.

Battery replaced at 40k, thermostat replaced at around the same time. I'm told one of the valve cover gaskets is weeping oil but not enough to worry about.

Other than that, have had some miscellaneous warranty issues (like a faulty steering shaft and a couple of recalls) but no maintenance-related failures.

Dec 1, 2009 | 02:16 PM

#13

05545i

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Joined: Nov 2009

Posts: 272

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From: Warwick, RI

My Ride: 2005 545i Sport 6MT

I'll probably be doing plugs soon. As far as the pressure regulating valves, can they be purchased aftermarket? Or BMW only? And plugs, what are you guys using and where did you get them? Thanks!

Dec 1, 2009 | 03:29 PM

#14

turbo_mustang12

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From: cali

I had to replace the brake booster also

Dec 1, 2009 | 03:33 PM

#15

dawid_w

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Joined: Oct 2009

Posts: 173

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From: Texas

My Ride: Orient blue '05 545i, Sport/Premium Pkg, 6Speed MT, Xenon, Navi, Blue2th, PDC,

Quote:

Originally Posted by ivan545' post='1065776' date='Dec 1 2009, 01:16 PM

What kind of problems or symptoms did you encounter if any , before replacing the pressure regulating valve?

I have 80K on my 545i, so far I have replace.

brake booster
radiator reservoir and the top hose
i'm thinking about replacing the belt tensioner soon and the pressure regulating valve.
Doing my brakes in a few weeks.
spark plugs replaced in 70k
battery replaced just recently
transmission serviced

Regarding the pressure regulating valve.
As I said before. In my case the engine was rough on start. At the end it got really bad.. And finally the emission light came on (Service engine soon + increased emission)
This is a great DIY regarding the pressure regulating valves (545i has two valves)

https://5series.net/forums/index.php?showtopic=85337

Dec 1, 2009 | 03:36 PM

#16

hmc

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Joined: Oct 2005

Posts: 340

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From: Carlsbad, California

My Ride: 2007 BMW 550i Sport Pkg, 6MT

For these who had to replace the brake booster, what was the reason/symptom?

Dec 1, 2009 | 03:45 PM

#17

dawid_w

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Joined: Oct 2009

Posts: 173

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From: Texas

My Ride: Orient blue '05 545i, Sport/Premium Pkg, 6Speed MT, Xenon, Navi, Blue2th, PDC,

I had to replace the brake booster also
[/quote]

Did you check brake booster vacuum hose ?
Item number 5 - it goes from the booster all the way to the vacuum pump. It is made 90% from plastic, but there is a rubber connector just before the vacum pump. It cracks in the buttom

http://www.realoem.com/bmw/showparts.do?mo...hg=34&fg=25

What kind of mileage do you guys have on your 545/550s? Probelms alon-vacuum_hose.jpg

Dec 1, 2009 | 03:47 PM

#18

05545i

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Joined: Nov 2009

Posts: 272

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From: Warwick, RI

My Ride: 2005 545i Sport 6MT

I'll have to check that when i change the brake fluid.

Dec 1, 2009 | 03:58 PM

#19

dawid_w

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Joined: Oct 2009

Posts: 173

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From: Texas

My Ride: Orient blue '05 545i, Sport/Premium Pkg, 6Speed MT, Xenon, Navi, Blue2th, PDC,

Quote:

Originally Posted by 05545i' post='1065974' date='Dec 1 2009, 06:47 PM

I'll have to check that when i change the brake fluid.

This is in front of the engine. Open the hood on the left side (below radiator reservoir)

Dec 1, 2009 | 04:07 PM

#20

dawid_w

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Joined: Oct 2009

Posts: 173

Likes: 1

From: Texas

My Ride: Orient blue '05 545i, Sport/Premium Pkg, 6Speed MT, Xenon, Navi, Blue2th, PDC,

Quote:

Originally Posted by hmc' post='1065969' date='Dec 1 2009, 06:36 PM

For these who had to replace the brake booster, what was the reason/symptom?

At the low speed it was very hard to press the brake pedal. At high speeds or high RPMs no problem... It was loosing the vacuum pressure.

But check the vacuum pipe first.

You can buy the TRW (OEM) brake booster at http://www.partsgeek.com/

It is the same part but no BMW logo ;-)

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