logo elektroda
logo elektroda
X
logo elektroda
Advanced Search
logo elektroda

BMW 320 E46: Yellow Oil Warning Light - Oil Level or Pressure Sensor Issues? (Ignition Key)

lukaszekk1987 50820 9
Best answers LABEL_AI_GENERATED

Why does the yellow oil warning light come on after starting my BMW E46 even though the oil level is normal, and is it the oil level sensor or oil pressure sensor?

The yellow light is the oil level warning from the sensor in the oil pan, while the red light is the oil pressure warning; if the red light does not come on with ignition and the yellow light appears despite normal oil, the sensor system or its wiring is likely faulty [#15406055][#15416699][#15403979] With low oil pressure, the red warning should come on, so the missing red lamp points to a problem that should be checked rather than ignored [#15403463][#15416699] One reply also notes that on this engine the oil level sensor in the bowl is the one responsible for the yellow indicator, and topping up oil can clear it if the level is slightly low [#15403979] If the yellow warning disappears after a computer reset but the red light still does not appear with ignition on, the pressure sensor or its wiring may be defective [#15419079][#15416699] The suggested next step is to have a mechanic inspect the sensor(s), connectors, and wiring, especially because the red pressure warning must work properly [#15416699][#15418589]
AI summary based on the discussion. May contain errors.
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
Report a violation of the law
Reply | New topic
  • #1 15403316
    lukaszekk1987
    Level 6  
    Posts: 66
    Rate: 33
    Hello, I noticed in the car that after crossing the ignition key I do not have a red oil light, which goes out after a while. After starting the car, the yellow light appears after a while, it lights up for about 8 seconds, I wonder what was damaged? Is the oil level sensor (oil pan) or the oil pressure sensor? I will add that the oil is normal. I am asking for advice on what to check.
  • ADVERTISEMENT
  • #2 15403463
    cikol
    Level 27  
    Posts: 983
    Help: 61
    Rate: 38
    I would bet more on an oil level sensor. I had this symptom in low condition. With low pressure, it would have hit the bank red
  • ADVERTISEMENT
  • #3 15403979
    szymon198312
    Level 30  
    Posts: 1567
    Help: 126
    Rate: 890
    If the sensor is only the one in the bowl, because it is responsible for lighting this indicator. Do you have the oil inspections canceled? What oil level. For me it started to light up and it turned out that the condition is below the maximum. I added a few hundred and it went out
  • ADVERTISEMENT
  • #4 15405171
    lukaszekk1987
    Level 6  
    Posts: 66
    Rate: 33
    I have the maximum checked yesterday. Inspection also deletes. Know, I have to watch what is happening under the bowl, maybe some cube is baking? The symptom would be the same?
  • ADVERTISEMENT
  • #5 15406055
    helmud7543
    Level 43  
    Posts: 12626
    Help: 1216
    Rate: 1564
    After the ignition is switched on, the red indicator light should come on (low oil pressure). Since it does not appear at all and the yellow one (low oil level) is on, despite the fact that your oil is normal, both measuring systems are out of order.
  • #6 15416442
    lukaszekk1987
    Level 6  
    Posts: 66
    Rate: 33
    So it goes for both sensors to be replaced? Today a red light appeared for a moment and quickly went out
  • #7 15416699
    helmud7543
    Level 43  
    Posts: 12626
    Help: 1216
    Rate: 1564
    Probably, but let the mechanic understand whether it is a problem with the sensor, or maybe with the wires or something else. For me, the red one is on when the ignition is turned on when the engine is not running. It goes off when the engine is started. The yellow one lights up as soon as the engine is started, regardless of the oil level - here I probably have a dead sensor. You can not worry about the yellow one, as there is a dipstick, but the red one should be functional, because if you lose lubrication, you will only know when the engine fails.
  • #8 15418490
    lukaszekk1987
    Level 6  
    Posts: 66
    Rate: 33
    I will take it. The red one is flowing, it lights up time and time again. Where exactly is this oil pressure sensor? I know somewhere with the engine from above? maybe the issue with damaged cables.
  • #10 15419079
    lukaszekk1987
    Level 6  
    Posts: 66
    Rate: 33
    Thank you. I connected to the computer, deleted it and the yellow one is gone. Only now does not light up red when over-ignition. Could the oil pressure sensor have failed? It will light up again and again, but it is rare

    Added after 10 [minutes]:

    Freshly turned on the ignition. No red
    Attachments:
    • BMW 320 E46: Yellow Oil Warning Light - Oil Level or Pressure Sensor Issues? (Ignition Key) DSC_0900.JPG (2.1 MB) You must be logged in to download this attachment.
Reply | New topic
Report a violation of the law

Topic summary

LABEL_AI_GENERATED
The discussion revolves around a BMW 320 E46 experiencing a yellow oil warning light after ignition, while the red oil pressure light does not activate. Users suggest that the issue may stem from either the oil level sensor or the oil pressure sensor. One user notes that the yellow light typically indicates low oil level, but since the oil level is confirmed normal, it may point to a malfunctioning sensor. Another user emphasizes the importance of the red oil pressure light functioning correctly, as it indicates potential lubrication failure. The conversation includes troubleshooting steps, such as checking the sensors and wiring, and a link to a resource detailing sensor locations and replacement procedures. The author later reports that the yellow light disappeared after resetting the system, but the red light remains inconsistent.
AI summary based on the discussion. May contain errors.
ADVERTISEMENT