Red Oil Light

Asked by May 24, 2016 at 03:32 AM about the 2007 BMW 3 Series

Question type: Maintenance & Repair

I have a red oil light appearing on mu instrument panel when I start my
BMW E90 320i.  However this light will disappear after about 15-30
seconds.  Further to this during the period that the red light is being
displayed it would sound as if the engine has loose tappets, and the sound
typically goes away when the light goes off. What can be the problem?   I
have done 303000 kilometers with the vehicle thus far.    The second
problem is also that the vehicle are loosing pressure from time to time and I
have been told that the VVT units have to be replaced and are hugely
expensive.

1 Answer

13,905

Right, VVT BMW, HUGE expense. LOW oil pressure cause all this time for a rebuild...188275 miles Faulty exhaust side hydraulic valve lifters (HVA) can cause a ticking noise after the engine is warmed up in some 2006-2008 models with the N52 engine. Some owners report the noise temporarily disappeared after a long highway drive or switching to different type of engine oil. As per one of the BMW service bulletins (SIB), the 12 exhaust side lifters must be replaced with updated parts ($1,200-$2,000 repair). In some cases the cylinder head also had to be replaced to completely resolve the problem. "The Valvetronic motor is used on BMW E90 models with a normally-aspirated engine. It is responsible for actuating an eccentric shaft that adjusts intake valve lift. The motor itself is pretty reliable and does not fail too often. However, you will have to remove it for other engine repairs and the gasket that seals the mounting surface of the Valvetronic motor fails and leaks oil. When repairs are performed on the Valvetronic assembly, the limit stops have to be relearned. You will need access to a BMW scan tool to do this procedure. The limit stops are the mechanical limit stop, end to end of rotation of the eccentric shaft. The DME (digital motor electronics) records these stops via the eccentric shaft sensor to determine mechanical adjustment limits of the eccentric shaft. With that said, when removing the motor to replace the gasket you are not changing the mechanical position of any Valvetrnoic assembly components, a relearn is not always needed. Now use this with caution and when in doubt, perform the relearn. Do your research and check with up to date repair information before beginning."

Your Answer

BMW 3 Series Experts

  • #1
    Tom Demyan
    Reputation
    5,290
  • #2
    Robert Charlson
    Reputation
    1,690
  • #3
    grolyate
    Reputation
    1,290
View All

Related Models For Sale

Used BMW 5 Series
48 Great Deals out of 667 listings starting at $1,949
Used BMW M3
91 listings starting at $14,990
Used Mercedes-Benz C-Class
140 Great Deals out of 1,587 listings starting at $1,999
Used Audi A4
52 Great Deals out of 636 listings starting at $1,995
Used Ford Mustang
5 Great Deals out of 1,036 listings starting at $3,995
Used Honda Accord
63 Great Deals out of 1,175 listings starting at $1,488
Used Mercedes-Benz E-Class
37 Great Deals out of 612 listings starting at $2,390
Used BMW 6 Series
7 Great Deals out of 124 listings starting at $10,950
Used BMW X5
36 Great Deals out of 940 listings starting at $2,950
Used BMW 7 Series
8 Great Deals out of 175 listings starting at $5,995
Used Dodge Charger
64 Great Deals out of 730 listings starting at $1,600
Used BMW 1 Series
10 Great Deals out of 126 listings starting at $7,200
Used Honda Civic
286 Great Deals out of 4,290 listings starting at $1,815

Used Cars For Sale

2018 BMW 3 Series For Sale
16 Great Deals out of 404 listings starting at $46,247
2017 BMW 3 Series For Sale
31 Great Deals out of 146 listings starting at $30,900
2016 BMW 3 Series For Sale
10 Great Deals out of 98 listings starting at $25,494
2015 BMW 3 Series For Sale
70 listings starting at $24,894
2014 BMW 3 Series For Sale
25 Great Deals out of 291 listings starting at $17,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.