Oil level/temp sender failures?

[Fffrank]

I had the oil level and temp sender go bad on my 2002 last year. I ordered a new one from ECS Tuning and swapped it out during my regular oil change. That sensor appeared to be DOA. To ECS credit they sent me a new one and allowed me to keep the old one (I wasn't too excited to have to dump the oil again so I deferred replacement #2 until my next oil change.)

The replacement sensor worked great. For 4000 miles. Now it's failing again.

Is this a part known to go bad or have bad after-market replacements on the market? Or do I just have dumb luck?

[Slideways]

Is it a Hella sensor?

[Tbonem3]

Bad luck or it's not an OE Hella part.

[Fffrank]

Looks like it's a Bremmen part?

https://www.ecstuning.com/b-assembled-by-ecs-parts/oil-level-sensor-with-hardware/12617508003kt/

[Lukem3]

https://www.fcpeuro.com/products/bmw-oil-level-sender-12617508003-1

This is what you want

Sent from my SM-G996U1 using Tapatalk

[old///MFanatic]

Yep, that bugger has a high failure rate on E46s.
As posted this one is best to go with the OE supplier which is Hella. And to be honest even those can go out. So best to purchase at a place like FCP Euro where you get a lifetime warranty.

[Exclusivs]

Don't feel bad - my original ones on way out (yellow oil warning light)

Got the Hella part in hand ready to swap on next oil change.

[trudriv3r]

can the car still be used with no worry if the sensor goes bad?

I just changed the oil and my sensor is dead. not trying to take the sensor out and drain the oil again

[old///MFanatic]

can the car still be used with no worry if the sensor goes bad?

I just changed the oil and my sensor is dead. not trying to take the sensor out and drain the oil again

Yep it’s fine to use when bad.
Just be sure to use the oil dipstick more than less often to check because you’re ignoring since the light is on.