Is there any preventive maintenance to extend the lifespan of Brake Booster?

What are the preventive maintenances to extend the lifespan of Brake Booster in Gen 3 (2013-2015)? Specially, if you are living in a hot city with bumper to bumper traffic congestions on a daily basis.

Is changing brake fluid (DOT 3) every 2 years or as soon as the moisture level goes above 2-3% the recommended practice in the mentioned scenario to extend life?

I specifically mentioned the model years because I read that the early Gen 3 models have been more prone to brake booster failure than the later ones.

I had replaced the Brake Booster Pump Motor with a used/reconditioned part about a year ago at 120K Kilometers (75K miles). I would need to replace to whole set (including the Master Cylinder) soon because the code for Abnormal Leak C1391 has just popped up.

I have never replaced the Brake Fluid during my ownership of the vehicle for last 5 years. So, wondering what I'd really need to follow post replacement of the mentioned parts.

 

When the brake fluid is contaminated with moisture, it likely corrodes the parts inside the Master Cylinder which eventually causes the "leak". Probably that is the sole reason behind the recommendation to "replace brake fluid every 2 years / 30,000 kilometers" according to Toyota Prius for Canda manual.

 

Thanks for the manual. I had the information from you in mind that you wrote in another post when I wrote about the Toyota Canada manual. I forgot the exact numbers and duration, thanks for the correction.