Oil pressure warning light?!?!

Mattt · Post by **Mattt** » Sun Dec 02, 2018 11:13 am

BMW Z4 e89 SDrive23i (2.5 litre) Sept. 2010 - Only about 36,000 miles - Intermittent low oil pressure light problem.

The car was due an oil service in December, but a couple of weeks ago the red oil pressure light came on. I stopped the car and upon restarting, it was fine and drove home OK. I had the oil service done, but a few days later the light came on again (again it was fine after stopping and restarting - no obvious bad engine noise). I then had the oil pressure switch replaced with genuine BMW part. Fine for a few days and maybe 50 - 60 miles in a variety of driving conditions, but last night it came on again. As usual, I stopped and restarted and all was fine. Anyone any ideas as to what I do now?

Smartbear · Post by **Smartbear** » Sun Dec 02, 2018 11:22 am

Mattt wrote: ↑Sun Dec 02, 2018 11:13 am BMW Z4 e89 SDrive23i (2.5 litre) Sept. 2010 - Only about 36,000 miles - Intermittent low oil pressure light problem.

The car was due an oil service in December, but a couple of weeks ago the red oil pressure light came on. I stopped the car and upon restarting, it was fine and drove home OK. I had the oil service done, but a few days later the light came on again (again it was fine after stopping and restarting - no obvious bad engine noise). I then had the oil pressure switch replaced with genuine BMW part. Fine for a few days and maybe 50 - 60 miles in a variety of driving conditions, but last night it came on again. As usual, I stopped and restarted and all was fine. Anyone any ideas as to what I do now?

What does the electronic dipstick say the level is?
Rob

Busterboo · Post by **Busterboo** » Sun Dec 02, 2018 12:21 pm

I then had the oil pressure switch replaced with genuine BMW part

Switch? Or sensor? And who did the work? The same guy who did the previous and recent oil services?

Mattt · Post by **Mattt** » Sun Dec 02, 2018 12:38 pm

Oil level on max.

Work was carried out by local reputable BMW Specialist including services etc.

Mattt · Post by **Mattt** » Sun Dec 02, 2018 12:43 pm

Switch and sensor the same thing on this no?

Switch part no. B21.61.7.549.796 replaced.

Busterboo · Post by **Busterboo** » Sun Dec 02, 2018 12:59 pm

An oil warning light is never good. Take it to a garage you trust.

Mattt · Post by **Mattt** » Sun Dec 02, 2018 3:06 pm

No leaks, no top ups have been required - it stays on max.

Sensor replaced with brand new OEM.

It’s going back next week, will see what the codes say.

Mattt · Post by **Mattt** » Mon Dec 03, 2018 11:18 pm

Indy confirmed codes were 30C1 and 30C4 - pointing to oil pressure control fault.

It’s going into Main Dealer for them to check actual pressures - which the Indy says he can’t do.

Phil40 · Post by **Phil40** » Tue Mar 09, 2021 6:12 pm

Hi, i have the same probleme. Anyone have found a solution ?

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