Monday through Friday: 8:00am – 5:00pm
On lunch from 12:30pm – 1:30pm
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Auto Electrical Repair & Diagnostics

Tristar Automotive provides professional auto electrical diagnostics and repair for drivers throughout Santa Rosa and Sonoma County.

Why Choose Tristar Automotive for Auto Electrical Repair?

Modern vehicles rely on increasingly sophisticated electrical and electronic systems. From starting and charging problems to warning lights and intermittent electrical faults, Tristar Automotive combines experienced ASE-certified technicians with advanced diagnostic equipment to accurately identify electrical problems and make the repairs needed to restore dependable operation.

Electrical System Diagnostics

Electrical problems aren’t always obvious. A weak battery, failing alternator, damaged wiring, faulty sensor or control-system issue can produce similar symptoms. Our technicians use professional diagnostic equipment and systematic testing to identify the source of electrical problems rather than simply replacing parts and hoping for the best.

Battery, Starting & Charging Systems

Slow cranking, hard starting, dimming lights and repeated dead batteries can indicate problems with the battery, starter, alternator or charging system. Tristar Automotive can test these systems, identify failing components and perform the necessary repairs or replacement to restore reliable starting and charging performance.

Wiring, Sensors & Electrical Components

Today’s vehicles contain extensive wiring, sensors, switches, modules and electronically controlled components. We diagnose and repair wiring faults, electrical connections and malfunctioning components that can cause warning lights, intermittent problems, accessory failures and other electrical issues.

Trusted by Drivers Across Sonoma County

Drivers throughout the North Bay trust our experienced technicians for accurate diagnostics, dependable repairs and straightforward recommendations.
Google star 1Google star 2Google star 3Google star 4Google star 5
4.9
verified by Trustindex
Trustindex verifies that the company has a review score above 4.5, based on reviews collected on Google over the past 12 months, qualifying it to receive the Top Rated Certificate.

More Auto Repair Services

Be sure to read more about how our Factory Scheduled Maintenance services can save you money. And, be sure to view our complete line-up of Automotive Repair and Services available at Tristar Automotive in Santa Rosa, CA!

The image conveys electrical diagnostic and repair services offered by Tristar Automotive in Santa Rosa, CA.

Why Drivers Trust Tristar Automotive

Posted on Google Google
Robert-Connie Mullan profile picture
Robert-Connie Mullan
15 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
needed a certificate for DMV. Charged shop rate for three hours for service I suspect took mich less time.
Posted on Google Google
craig alness profile picture
craig alness
4 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great service, quality work, reasonable prices. I bring my grandma's 1972 Chevelle in every year and trust this team to take good care of this very special car.
Posted on Google Google
K Beau profile picture
K Beau
29 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Wonderful experience all the way around. Did a diagnostic on my older Lexus and provided a detailed report of all its foibles and best way to proceed. From initial phone call to picking up car after, truly an exceptional experience. Thank you!!
Posted on Google Google
Michael Voight profile picture
Michael Voight
27 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Easy to tow in car. Called me and asked what the issue seemed to be and fixed the problem. They pushed an oil change and air filter change but was quite a bit overpriced. Over $300 for both. I understand they need to make money but be wary of that. Otherwise they did good and fast work.
Posted on Google Google
Pat Pointer profile picture
Pat Pointer
18 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Had a great experience and felt well informed about my F-150 EcoBoost repair options for a coolant leak that caused the engine to overheat. I wasn’t feeling my best while facing the consequences of my truck requiring major repairs. The detailed estimate broke down every cost, from clips and hoses to labor, so there were no surprises. My questions were welcomed, and they took the time to explain what to expect. The staff and management were friendly, knowledgeable, and genuinely helpful. I especially appreciated the straightforward, low-pressure approach compared with some of my past dealership experiences. Highly recommend!
Posted on Google Google
shannon stegner profile picture
shannon stegner
11 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I had to tow my vehicle into Tristar at 4pm the Friday before a holiday weekend. I was stranded in the side of the road and didn’t know who to call so, after a brief google search, I called Tristar. They let me know I’d could have my car towed over and it could stay over the long weekend but that they’d get back to me with an update as quickly as possible upon return from the holiday. As promised they did get back to me and let me know that the situation with my car was something that was actually covered by the maker of my vehicle via a class action lawsuit / extended warranty fix (my car is 1.5 yrs out of manufacture warranty). They told me to go ahead and make an appt with a local dealership and let me know exactly what to ask for re: this extended warranty. Additionally, they didn’t charge me for the diagnostic time it took them to identify the situation. I’m incredibly appreciative of their responsiveness and honesty in a moment that was very unexpected and stressful. They absolutely have my business from here out!
Posted on Google Google
Harold Duncan profile picture
Harold Duncan
29 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Very efficient and professional work…Staff is very kind and friendly as well…l had a Smog check…
Posted on Google Google
James Fitzgerald profile picture
James Fitzgerald
22 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great service and communication, thank you Team TriStar! Reliable and always stand behind their work and dedication, delivered with kindness and customer satisfaction!
Posted on Google Google
julie berman profile picture
julie berman
19 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Left the dealership where I purchased my car and became a new customer of TriStar. They could not have been nicer, and their fees were very reasonable. Color me very pleased with my overall experience.
Posted on Google Google
H P Mechanical profile picture
H P Mechanical
14 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
We have used tri star for many years, for service for our service fleet. We have found them to be honest, fair, efficient and they always keep you in the loop of your repair.
Posted on Google Google
Mark Jones profile picture
Mark Jones
29 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
There good and fast!
Posted on Google Google
Stephen Riedel profile picture
Stephen Riedel
28 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I have had a couple recent repairs here including the catalytic converter and brake booster on my ‘98 Tacoma. I’ve been impressed by how responsive, timely, knowledgeable and professional the shop owners are! Thank you for all the high quality work you guys have done! It is much appreciated even though the issues have been unanticipated. It’s been a pricey last six months for me with all the vehicle repairs, but I’m trying to keep it running well for at least another 100K miles. 👍🏻 I hope I don’t have to come in anytime soon… :)
Posted on Google Google
MaryLou Herrera profile picture
MaryLou Herrera
26 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I received good service. I felt comfortable and confident with the service I received.
Posted on Google Google
Diane Castro profile picture
Diane Castro
15 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
My first experience was great! Ken was professional and fast. I needed a new catalytic converter in my 2014 Kia so it could pass the smog test - Ken was communicative and friendly. I love that they have a company Uber account so I could be taken home after I dropped my car off.
Posted on Google Google
Chip Smith profile picture
Chip Smith
11 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Ken & Zac got me in quickly, diagnosed my issues, and got me back on the road tootsweet - pardon my french. (They even laughed at my corny jokes! Thanks, guys...😇) My problem turned out to be much less serious than I thought, and they were in contact with me the through the entire process. AND they got me a rideshare to and from! If you want a shop with friendly, reliable folks, you won't go wrong with TriStar!
Posted on Google Google
William Keim profile picture
William Keim
9 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
TriStar Automotive began with an oil change. Most recently I received more service to my car. It needed the attention and TriStar Automotive provided exceptional service. I would highly recommend TriStar to anyone looking for quality, honesty, and integrity.

Trusted Auto Electrical Repair & Diagnostics

Since 1991, Tristar Automotive has provided professional automotive service backed by experienced ASE-certified technicians, advanced diagnostic equipment and a commitment to accurate, dependable repairs.

For Professional Automotive Electrical Service

Call (707) 571-8866

Common Auto Electrical Problems We Diagnose & Repair

Battery & Charging Problems

Weak or discharged batteries can result from more than an aging battery. Charging-system problems, poor electrical connections and excessive electrical draw can all leave a vehicle unable to start reliably. We test the complete system to determine the actual cause before recommending repairs.

Starter & Alternator Problems

Weak or discharged batteries can result from more than an aging battery. Charging-system problems, poor electrical connections and excessive electrical draw can all leave a vehicle unable to start reliably. We test the complete system to determine the actual cause before recommending repairs.

Warning Lights & Electrical Diagnostics

Weak or discharged batteries can result from more than an aging battery. Charging-system problems, poor electrical connections and excessive electrical draw can all leave a vehicle unable to start reliably. We test the complete system to determine the actual cause before recommending repairs.

Wiring & Intermittent Electrical Faults

Loose connections, damaged wiring, corrosion, faulty grounds and deteriorated connectors can create frustrating intermittent problems. Electrical troubleshooting requires systematic testing to locate the actual fault rather than simply replacing components.

Power Accessories & Electrical Components

Electrical problems can also affect lighting, power windows, switches, accessories and other vehicle systems. Our technicians can diagnose electrical failures and determine whether the problem originates with wiring, controls, components or another related system.

Our Customer Reviews

These are just a few reviews from our valued car service & repair customers throughout Sonoma County.

Posted on Google Google
Robert-Connie Mullan profile picture
Robert-Connie Mullan
15 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
needed a certificate for DMV. Charged shop rate for three hours for service I suspect took mich less time.
Posted on Google Google
craig alness profile picture
craig alness
4 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Great service, quality work, reasonable prices. I bring my grandma's 1972 Chevelle in every year and trust this team to take good care of this very special car.
Posted on Google Google
K Beau profile picture
K Beau
29 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Wonderful experience all the way around. Did a diagnostic on my older Lexus and provided a detailed report of all its foibles and best way to proceed. From initial phone call to picking up car after, truly an exceptional experience. Thank you!!
Posted on Google Google
Michael Voight profile picture
Michael Voight
27 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Easy to tow in car. Called me and asked what the issue seemed to be and fixed the problem. They pushed an oil change and air filter change but was quite a bit overpriced. Over $300 for both. I understand they need to make money but be wary of that. Otherwise they did good and fast work.
Posted on Google Google
Pat Pointer profile picture
Pat Pointer
18 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Had a great experience and felt well informed about my F-150 EcoBoost repair options for a coolant leak that caused the engine to overheat. I wasn’t feeling my best while facing the consequences of my truck requiring major repairs. The detailed estimate broke down every cost, from clips and hoses to labor, so there were no surprises. My questions were welcomed, and they took the time to explain what to expect. The staff and management were friendly, knowledgeable, and genuinely helpful. I especially appreciated the straightforward, low-pressure approach compared with some of my past dealership experiences. Highly recommend!
Posted on Google Google
shannon stegner profile picture
shannon stegner
11 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
I had to tow my vehicle into Tristar at 4pm the Friday before a holiday weekend. I was stranded in the side of the road and didn’t know who to call so, after a brief google search, I called Tristar. They let me know I’d could have my car towed over and it could stay over the long weekend but that they’d get back to me with an update as quickly as possible upon return from the holiday. As promised they did get back to me and let me know that the situation with my car was something that was actually covered by the maker of my vehicle via a class action lawsuit / extended warranty fix (my car is 1.5 yrs out of manufacture warranty). They told me to go ahead and make an appt with a local dealership and let me know exactly what to ask for re: this extended warranty. Additionally, they didn’t charge me for the diagnostic time it took them to identify the situation. I’m incredibly appreciative of their responsiveness and honesty in a moment that was very unexpected and stressful. They absolutely have my business from here out!
Posted on Google Google
Harold Duncan profile picture
Harold Duncan
29 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Very efficient and professional work…Staff is very kind and friendly as well…l had a Smog check…
Posted on Google Google
James Fitzgerald profile picture
James Fitzgerald
22 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Great service and communication, thank you Team TriStar! Reliable and always stand behind their work and dedication, delivered with kindness and customer satisfaction!
Posted on Google Google
julie berman profile picture
julie berman
19 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Left the dealership where I purchased my car and became a new customer of TriStar. They could not have been nicer, and their fees were very reasonable. Color me very pleased with my overall experience.
Posted on Google Google
H P Mechanical profile picture
H P Mechanical
14 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
We have used tri star for many years, for service for our service fleet. We have found them to be honest, fair, efficient and they always keep you in the loop of your repair.
Posted on Google Google
Mark Jones profile picture
Mark Jones
29 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
There good and fast!
Posted on Google Google
Stephen Riedel profile picture
Stephen Riedel
28 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
I have had a couple recent repairs here including the catalytic converter and brake booster on my ‘98 Tacoma. I’ve been impressed by how responsive, timely, knowledgeable and professional the shop owners are! Thank you for all the high quality work you guys have done! It is much appreciated even though the issues have been unanticipated. It’s been a pricey last six months for me with all the vehicle repairs, but I’m trying to keep it running well for at least another 100K miles. 👍🏻 I hope I don’t have to come in anytime soon… :)

Schedule Service with Tristar Automotive

To schedule an appointment with Tristar Automotive, give us a call at (707) 571-8866 or fill out the form below with your contact information and requested service(s). One of our team members will get back to you as soon as possible!

Appointment Form