Found the E90 320d replacing the E82 120d

[DRCraig]

Update time

3 months in with my new alternator and the same battery that experienced overcharge with the old alternator.

I've noticed the rotten egg (hydrogen sulfide) smell again few days ago. Luckily I was in Cape Town, so I took the car to SMG Century City to have them check it out.

I was informed that my battery (2018) is on its wat out (I have not really experienced any electrical issues), hence the alternator is trying to overcharge it.

Bmw quoted me R6.1k for a new battery hoping that thereafter the alternator charge would stabilize to 14.2V.

Is it likely that the old alternator damaged my battery and now it is affecting the operation of the new alternator?

Any advice going forward?

 

[AshG108]

Update time

3 months in with my new alternator and the same battery that experienced overcharge with the old alternator.

I've noticed the rotten egg (hydrogen sulfide) smell again few days ago. Luckily I was in Cape Town, so I took the car to SMG Century City to have them check it out.

I was informed that my battery (2018) is on its wat out (I have not really experienced any electrical issues), hence the alternator is trying to overcharge it.

Bmw quoted me R6.1k for a new battery hoping that thereafter the alternator charge would stabilize to 14.2V.

Is it likely that the old alternator damaged my battery and now it is affecting the operation of the new alternator?

Any advice going forward?

Did you code the battery when the alternator was changed? Coding aligns the battery to accept a new alternator and vice versa from my understanding.
Secondly, does your car have a DP or not because normally that smell is when the cat is blocked.

 

[DRCraig]

Did you code the battery when the alternator was changed? Coding aligns the battery to accept a new alternator and vice versa from my understanding.
Secondly, does your car have a DP or not because normally that smell is when the cat is blocked.

Thanks for the response.

Yes, the car has a downpipe, but that burned battery smell is so distinctive. BMW changed the battery and the alternator charge stabilized thereafter. Think the old battery took a knock with the previous prolonged overcharge.

Will monitor closely.