 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / September 2007"Oil Service"
If a BMW says "Oil Service" and shows a red and yellow set of lights when you turn it on, does this mean the oil needs to be changed? > If a BMW says "Oil Service" and shows a red and yellow set of lights > when you turn it on, does this mean the oil needs to be changed? ayup. nate  Signaturereplace "roosters" with "cox" to reply. http://members.cox.net/njnagel >> If a BMW says "Oil Service" and shows a red and yellow set of lights >> when you turn it on, does this mean the oil needs to be changed? > > ayup. Dog ate his Owner's Manual, I figure. SignatureTegger >If a BMW says "Oil Service" and shows a red and yellow set of lights >when you turn it on, does this mean the oil needs to be changed? Yes, and most of them are set to come on after a VERY long service interval. So the light actually means your oil should have been changed a couple thousand miles ago. --scott Signature"C'est un Nagra. C'est suisse, et tres, tres precis." >>If a BMW says "Oil Service" and shows a red and yellow set of lights >>when you turn it on, does this mean the oil needs to be changed? [quoted text clipped - 5 lines] > miles ago. > --scott I was surprised to learn that the GM oil service lights are activated according to a rather rigidly developed mathematical model. It is not on the basis of any particular "oil quality" sensor. I dont know how Bayerische Motoren Werke does theirs. I dont trust these lights either, and change my oil when I want to (and that is at 3-4000 miles) >I was surprised to learn that the GM oil service lights are activated >according to >a rather rigidly developed mathematical model. It is not on the basis of >any particular >"oil quality" sensor. I dont know how Bayerische Motoren Werke does >theirs. On my old 535, it comes on after 6,000 miles, I believe. >I dont trust these lights either, and change my oil when I want to (and that >is at >3-4000 miles) I'd be curious to know what the inputs to GM's model are. Odometer certainly, and maybe integrated fuel consumption. What else? --scott Signature"C'est un Nagra. C'est suisse, et tres, tres precis." >>I was surprised to learn that the GM oil service lights are activated >>according to [quoted text clipped - 11 lines] > I'd be curious to know what the inputs to GM's model are. Odometer > certainly, and maybe integrated fuel consumption. What else? Temperature (both engine and ambient) as a function of time, RPM and time spent at given RPM (to detect prolonged idling or crawl-along traffic), probably manifold pressure (which is an indicator of torque and therefore an indicator of main bearing contact prssure), etc. LOTS of information is available to a modern engine management computer. > >>I was surprised to learn that the GM oil service lights are activated > >>according to [quoted text clipped - 17 lines] > and therefore an indicator of main bearing contact prssure), etc. LOTS > of information is available to a modern engine management computer. How does it know you have changed the oil? A microswitch on the drain plug?:-) Dan > How does it know you have changed the oil? A microswitch > on the drain plug?:-) > > Dan I think you have to "tell" it. Last time I had a GM rental I remember reading how in the manual, but I've forgotten. Pretty simple, though. >> How does it know you have changed the oil? A microswitch >> on the drain plug?:-) [quoted text clipped - 3 lines] > I think you have to "tell" it. Last time I had a GM rental I remember > reading how in the manual, but I've forgotten. Pretty simple, though. On the Cobalt it's a selection in the DIC... (Driver Information Center) >> How does it know you have changed the oil? A microswitch >> on the drain plug?:-) [quoted text clipped - 3 lines] > I think you have to "tell" it. Last time I had a GM rental I remember > reading how in the manual, but I've forgotten. Pretty simple, though. On the Chevy full-size vans I've had (all since 2003), all you do is turn the key on, mash the accelerator 3 times, then turn it off. Then it's reset. > How does it know you have changed the oil? A microswitch >on the drain plug?:-) On the 535, you put a meter across two pins of the maintenance connector, then short two other pins with the jumper. When the meter pulses seven times, you remove the jumper and the counter is reset. You can buy a tool to do this for you in an automated fashion but I am too cheap to do so. No doubt the GM system will require a proprietary GM workstation to be connected up to the car's ECU... --scott Signature"C'est un Nagra. C'est suisse, et tres, tres precis." "Scott Dorsey" <kludge@panix.com> wrote in message news:fd1681 > No doubt the GM system will require a proprietary GM workstation to be > connected up to the car's ECU... > --scott In previous years, it could be as simple as pressing a button to reset the system upon fresh oil change. There were other ways to get to the reset on some models. Probably some scanners could reset as well, but I dont know this for fact. My Avalon is set up to set the dashlight in accordance with preprogrammed mileage limits. > <Dan_Thomas_nos...@yahoo.com> wrote: > > How does it know you have changed the oil? A microswitch [quoted text clipped - 13 lines] > -- > "C'est un Nagra. C'est suisse, et tres, tres precis." On my 2000 Silverado, you turn the key without starting the engine and then pump the gas pedal all the way to the floor 3 times. Of course, mine take 5 or 6 pumps but it eventually resets. Derek >> How does it know you have changed the oil? A microswitch >> on the drain plug?:-) [quoted text clipped - 9 lines] > connected up to the car's ECU... > --scott Uh, yeah, on my 01 Firebird you hold down the trip odo reset until the oil change light flashes. Other GM's have a "reset oil change light" button with the fuse panel. Ray >>>I was surprised to learn that the GM oil service lights are activated >>>according to [quoted text clipped - 16 lines] > an indicator of main bearing contact prssure), etc. LOTS of information is > available to a modern engine management computer. As you say, GM's algorithm uses about 5 variables to compute the condition of the motor oil. Makes no difference whether you use synthetic or lowly dinojuice. I found out that BWM (but I dont know when they started) use a system which is not too different. It is reputedly not just a mileage counter. Ford apparently is a very simple algorithm which starts you with 5000 miles , and subtracts mileage since last oil change. They also start you with 6 months and subtract the time since your last oil change. Those two values are compared as percentages, and you may be reminded to change at 5000 miles, or six months, etc. I suspect all these methods are, or have been, in transition. On Sep 21, 12:37 pm, "mike7...@gmail.com" <mike7...@gmail.com> wrote: > If a BMW says "Oil Service" and shows a red and yellow set of lights > when you turn it on, does this mean the oil needs to be changed? No, it means you need to open up the cluster and remove the LED module. Doing this will also add value to your car when you sell it. On Sep 21, 11:53 am, nottooo...@hotmail.com wrote: > On Sep 21, 12:37 pm, "mike7...@gmail.com" <mike7...@gmail.com> wrote: > [quoted text clipped - 3 lines] > No, it means you need to open up the cluster and remove the LED > module. Doing this will also add value to your car when you sell it. Not a good idea, at least on my old 535i, that would disable the temperature gauge (I know this because the service reminder was flaky on my car, and caused the temp. gauge to be intermittent.) nate > If a BMW says "Oil Service" and shows a red and yellow set of lights > when you turn it on, does this mean the oil needs to be changed? Well, I can't think of anything else that Oil Service idiot lights might indicate, so the answer must be yes. Have you read the owners manual recently? |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.