Auto Repair in San Bernardino, Riverside, Fontana, Redlands, CA 

Professional Automotive Services for Every Vehicle Need 

Full Automotive Repair and Maintenance Services Under One Roof  

When your vehicle needs reliable maintenance or repair, M and M Alternators provides comprehensive auto repair services across San Bernardino, Riverside, Fontana, and Redlands. Our experienced technicians understand that your car is essential to your daily routine, which is why we deliver thorough diagnostics and quality repairs that keep you moving safely down the road. From routine maintenance to complex electrical system repairs, we handle every service with the same attention to detail and commitment to excellence. Our team stays current with the latest automotive technology and repair techniques, ensuring your vehicle receives the most effective solutions available. Whether you drive a compact car, SUV, or pickup truck, we have the expertise and equipment to address your specific needs. We believe in transparent communication throughout the repair process, explaining what we find and why certain services are recommended. Trust M and M Alternators to deliver the professional auto repair services your vehicle deserves, backed by our commitment to quality workmanship and customer satisfaction.  

Our Electrical and Climate System Expertise  

Your vehicle’s electrical system powers everything from the engine to the headlights, so proper maintenance is essential. Our alternator repair services ensure your battery stays charged while driving. Signs of alternator issues include dimming lights, dashboard warnings, and starting difficulties. We thoroughly test all components to identify charging system problems. We also provide battery testing and replacement, inspecting terminals and cables to prevent future issues. In California’s warm climate, a functioning air conditioning system is crucial. Our A/C repair services cover the entire cooling system, diagnosing issues with refrigerant levels or mechanical components. Our technicians are certified to handle both R-134a and R-1234yf refrigerants. We inspect various A/C parts and offer recharge services and leak detection. Regular cabin air filter replacement is also recommended for maintaining fresh air circulation in your vehicle. 

Experience the M and M Difference 

With 4 convenient locations throughout the Inland Empire, M and M Alternators makes professional auto repair accessible when and where you need it most. Our commitment to quality extends beyond individual repairs to building lasting relationships with customers who trust us with their vehicle’s ongoing care. We use high-quality replacement parts and follow manufacturer specifications to ensure repairs meet or exceed original equipment standards. Our diagnostic equipment allows us to identify problems accurately, prevent unnecessary work, and help you make informed decisions about your vehicle’s maintenance. Each location maintains Mon – Fri: 8AM – 6PM to accommodate your busy schedule, with weekend availability at Sat: 8AM – 4PM Sun: Closed for added convenience. Whether you visit our San Bernardino location or any of our other facilities, you’ll receive the same professional service and attention to detail. Contact us today in San Bernardino at (909) 888-0907 or stop by our shop at 121 N Mt Vernon Ave, San Bernardino, CA 92410. Call our Riverside location at (951) 823-0530 or visit us at 1049 W La Cadena Dr, Riverside, CA 92501. Call (909) 251-4371 to speak with our Fontana shop or drop by 9433 Sierra Ave., Fontana, CA 92335. In Redlands call (909) 699-1647 or visit our shop at 1647 W Redlands Blvd P, Redlands, CA 92373.  

Frequently Asked Questions  

How often should I have my alternator tested?  

We recommend alternator testing during routine maintenance visits or whenever you notice dimming lights, dashboard warnings, or starting difficulties, typically every 60,000 to 100,000 miles, depending on your vehicle.  

What are the signs that my car’s A/C system needs repair?  

Common indicators include weak airflow, warm air instead of cold air, unusual noises when the A/C runs, or musty odors from the vents; all suggesting a professional diagnosis is needed.  

How long do car batteries typically last?  

Most car batteries last 3 to 5 years. However, extreme temperatures and driving habits can shorten their lifespan, making regular testing important to prevent unexpected failures.  

Can you repair A/C systems on all vehicle makes and models?  

Yes, our technicians are trained to service air conditioning systems on domestic and import vehicles, with access to the proper refrigerants and diagnostic equipment for each application.  

Do you offer warranties on electrical system repairs?  

We stand behind our alternator repair and battery replacement services with comprehensive warranties that cover both parts and labor for your peace of mind.