Stradale woes - Park off / ABS unavailable / ASR unavailable / ESC unavailable

[Zep]

From memory, the alternator should charge the battery no higher than 14.4V (please correct). There's actually two parts to the alternator. The generator bit (fairly reliable) that creates electricity as alternating current (not a dynamo) and a rectifier.

It's the rectifier's job to convert the AC to DC, these usually consist of a bridge rectifier (4 diodes in a certain configuration). Over time the silicon diodes break down causing voltage fluctuations.

My old SEAT Ibiza had this issue and a replacement diode pack sorted the issue, more cost-effectively than replacing the whole alternator.
Whether the Maserati rectifier pack can be replaced, I've not looked into but they are fairly standard parts. Probably off an iveco van.

It will be the voltage regulator which will pack up, I just did mine as it was all over the place.

 

[CatmanV2]

It will be the voltage regulator which will pack up, I just did mine as it was all over the place.

Mine was the same.

C

 

[midlifecrisis]

It will be the voltage regulator which will pack up, I just did mine as it was all over the place.

Which is just a Zener Diode (other brands available )

 

[CatmanV2]

Which is just a Zener Diode (other brands available )

Albeit quite a large one, I am given to understand

C