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CSAI Auto Service
Top-notch AUTO
Services
Auto Electrical Services
Maintenance & Auto Service
Engine Auto Service
Transmission Service
Star Smog Check Inspection
CARB Clean Truck Check
Vehicle Safety Systems Inspection
Check Engine Light Diagnostic
We have two locations to serve you best
Expert Automotive Services
At CSAI Auto Service, we use the latest equipment to diagnose and repair your vehicle’s issues efficiently and effectively. We stand behind our work with a guarantee, so you can trust that your vehicle is in good hands.
Complete & Reliable automotive service & repair
CSAI Auto Service
What sets CSAI Auto Service apart from all of the others in Riverside, CA?
Quality Service
We use the latest diagnostic equipment and high-quality parts to ensure your vehicle is repaired to the highest standards.
Experienced and Certified Technicians
Our technicians are highly skilled and certified professionals with years of experience in the auto repair industry. They have the expertise to diagnose and repair any problem your vehicle may have.
Customer Satisfaction
Our goal is to exceed your expectations and ensure your complete satisfaction with every visit.
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Recently Serviced Vehicles
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2007 Honda CR-V
Mileage58,605Service Date5/7/2026Services Performed- Checked Control Module for proper operation and fault codes if applicable: Good Checked cabin air filter condition: Good Checked drive belt condition: Good Checked A/C center vent temperature (72° F) and ambient air temperature (80.8°F) Checked low side service port for leaks: Leaking Checked high side service port for leaks: Leaking Checked low and high pressure readings: Low pressure (18.4 PSI), High pressure (123.2 PSI) System is low on charge Checked A/C compressor operation: Good Checked A/C condensor fan operation: Good Checked A/C evaporator inlet and outlet temperature difference: Low Checked A/C Condensor inlet and outlet temperature difference: Low Recover A/C system. Amount recovered (0.37 LBS), Specification (1 LB). Removed and replaced A/C service port schrader valves. Evacuate A/C system for 45 minutes and perform vacuum leak check: Leak check passed. Recharge A/C system with R-134A refrigerant and added leak detection dye to the system. Run the A/C system to circulate the leak detection dye and check for leaks: No further leaks present. Checked A/C system pressure after service: Low side pressure (26.4 PSI), High side pressure (145.4 PSI) Checked center vent temperature after service (40°F). Recommendations: Road tested vehicle. No further problem found with A/C system.
- Performed On Board Diagnosis (OBDII) Inspection, Visual Emission Control System Inspection and Visible Smoke Test Inspection. Also performed Malfunction Indicator Light Functional Test Test Result: Passed
Lilla H. gave our service a 5 star review on 5/11/2026 -
2004 Lincoln Navigator
Mileage306,566Service Date4/28/2026Services Performed- Diagnostic Steps; Step 1. Checked on-board monitors. All the required on-board monitors are set to completed. Correction – Monitors are set to completed.
- Performed On Board Diagnosis (OBDII) Inspection, Visual Emission Control System Inspection and Visible Smoke Test Inspection. Also performed Malfunction Indicator Light Functional Test Test Result: Passed
Linda W. gave our service a 5 star review on 4/28/2026 -
2011 Lexus IS 250C
Mileage106,064Service Date4/22/2026Services Performed- Checked All Lights – good Checked Wipers & Fluid – good Checked Mirrors – good Checked All Fluids – Brake fluid dirty Checked Battery – See Attached Test Strip Checked Belts & Hoses – Good Checked Brakes – Front 80% Rear 65 % Tread Depth: Front Left 8/32 Front Right 8/32 Rear Left 10/32 Rear right 10 /32
John L. gave our service a 5 star review on 4/22/2026 -
2018 Hyundai Elantra
Mileage117,257Service Date4/22/2026Services Performed- Performed On Board Diagnosis (OBDII) Inspection, Visual Emission Control System Inspection and Visible Smoke Test Inspection. Also performed Malfunction Indicator Light Functional Test Test Result: Pass
Juan S. gave our service a 5 star review on 4/22/2026 -
2018 Mercedes-Benz C300
Mileage71,481Service Date4/21/2026Services Performed- Lube Oil & Filter Service – Completed Air Filter: good Cabin air filter: good Battery Service Type of Battery: Mercedes Battery Serial Number: n/a Battery Number or Size: 800cca Clean Terminals: Yes Apply Corrosion Inhibitor: Yes Results of Alternator Test: Pass Battery Test Results: Pass Starting System Test Results: Pass Charging System Test Results: Pass See attached Test Results: Brake Inspection (Include Specs): Front Pads Spec (1mm) Actual Left (9mm) Right (9mm) Front Rotors Spec (1.181") Actual. Left (1.265") Right (1.262") Rear Pads/Shoes Spec (1mm) Actual Left (7mm) Right (7mm) Rear Rotors/Drums Spec (0.406") Actual. Left (0.488") Right (0.487") Check All Fluid Levels (Include Fluid Level & Condition): Good Notes: Inspect Belts (Include Condition): Good Notes: Inspect Hoses (Include Condition): Good Notes: Wiper Blades: Good Tire Rotation Notes: Rotated Tire Measurements (32nds): Left Front (7), Right Front (7), Right Rear (8), Left Rear (8)
- Performed a visual Inspection and prepared an estimate for parts and labor.
Monique W. gave our service a 5 star review on 4/21/2026 -
2014 Jeep Grand Cherokee
Mileage260,945Service Date4/17/2026Services Performed- Performed On Board Diagnosis (OBDII) Inspection, Visual Emission Control System Inspection and Visible Smoke Test Inspection. Also performed Malfunction Indicator Light Functional Test Test Result: Passed
Sandra W. gave our service a 5 star review on 4/20/2026 -
2006 Mitsubishi Eclipse
Mileage180,252Service Date4/8/2026Services Performed- Lube Oil & Filter Service – Complete Air Filter: Dirty Recommend replacing Cabin Air Filter: no replaced this visit Battery Service Type of Battery: n/A Battery Serial Number:34 f Battery Number or Size: 34 Clean Terminals:yes Apply Corrosion Inhibitor:yes Battery Test Results:good Starting System Test Results: normal Charging System Test Results: pass See attached Test Results. Brake Inspection (Include Specs): Front Pads Spec (2mm), Actual Left (7mm) Right (7mm) Front Rotors Spec (1.024), Actual Left (1.000) Right (.999) Rear Pads/Shoes Spec (2mm), Actual Left (6mm) Right (6mm) Rear Rotors/Drums Spec (.330), Actual Left (.381) Right (.379) Recommendations: Check All Fluid Levels (Include Fluid Level & Condition): Inspect Belts (Include Condition): Belts worn and cracking recommend replacing Inspect Hoses (Include Condition): Wiper Blades: Front blades and rear blades good , rear sprayer don't work and right front sprayer don't work and windshield is cracked Tire Rotation: Front to Rear Tire Measurements (32nds): Left Front (5), Right Front (5), Right Rear (6), Left Rear (6)
- HazMat EPA #CAL000339001
- Performed a visual Inspection and prepared an estimate for parts and labor.
- customer supplied / incorrect part , part was for a Honda not a Mitsubishi
Diones T. gave our service a 5 star review on 4/9/2026 -
2020 Chevrolet Tahoe
Mileage74,558Service Date3/9/2026Services Performed- Diagnostic Steps; Step 1. Confirmed the customers concern, while shifting from 3rd to 4th RPM flared upward with loss of speed. Step 2. Monitored all shift parameters throughout automatic and manual shifting, Parameters are within specs Step 3.Shift parameters within specs and transmission disengaging in 4th gear both while manually shifting and manually shifting indicated internal defect. Step 4. Recommend replacing Transmission. Correction – Replace Transmission with OEM Transmission.
- Performed a visual Inspection and prepared an estimate for parts and labor.
- TRANSMISSION ASSEMBLY – Remove & Replace – Premier, 5.3L Eng, RWD, 6 Spd Trans w/Skid Plate – [Includes: Programming. Includes: Confirm Fluid temperature for level check.] – [Includes: Flush Cooling Lines. Includes: Adjust and road test.]
- SHOCK &/OR STRUT ASSEMBLY – Remove & Install or Remove & Replace – Both – [DOES NOT include disassemble or alignment (where applicable).]
- SHOCK ABSORBER – Remove & Replace – w/Ride Level Control,One Side
- Alignment
- Road tested vehicle. Scanned vehicle for diagnostic trouble codes. No codes found. No further problem found with the transmission and the suspension.
Wesley S. gave our service a 5 star review on 3/13/2026 -
2011 Scion xB
Mileage191,872Service Date3/4/2026Services Performed- Performed On Board Diagnosis (OBDII) Inspection, Visual Emission Control System Inspection and Visible Smoke Test Inspection. Also performed Malfunction Indicator Light Functional Test Test Result: Passed
Dawn D. gave our service a 5 star review on 3/4/2026 -
2015 Buick Enclave
Mileage224,809Service Date2/27/2026Services Performed- Lube Oil & Filter Service – complete Air Filter: good Cabin Air Filter: good Battery Service Type of Battery: N/A Battery Serial Number: N/A Battery Number or Size: N/A Clean Terminals: N/A Apply Corrosion Inhibitor: N/A Battery Test Results: N/A Starting System Test Results: N/A Charging System Test Results: N/A See attached Test Results. N/A Brake Inspection (Include Specs): Front Pads Spec (2mm), Actual Left (6mm) Right (6mm) Front Rotors Spec (1.080), Actual Left (1.090) Right (1.090) Rear Pads/Shoes Spec (2mm), Actual Left (8mm) Right (8mm) Rear Rotors/Drums Spec (.720), Actual Left (.730) Right (.730) Recommendations: Check All Fluid Levels (Include Fluid Level & Condition): Inspect Belts (Include Condition): good Inspect Hoses (Include Condition): good Wiper Blades: good Tire Rotation:front to rear Tire Measurements (32nds): Left Front (7), Right Front (7), Right Rear (6), Left Rear (6)
- HazMat EPA #CAL000339001
- Performed a visual Inspection and prepared an estimate for parts and labor.
- Checked Control Module for proper operation and fault codes if applicable: Checked cabin air filter condition: Checked drive belt condition: Checked A/C center vent temperature and ambient air temperature: Checked low and high pressure readings: Low pressure , High pressure Checked A/C compressor operation: good Checked A/C condensor fan operation: good Checked A/C evaporator inlet and outlet temperature difference: good Checked A/C Condensor inlet and outlet temperature difference: good Recover A/C system (amount recovered): .200kg Evacuate A/C system for 45 minutes. Recharge A/C system with R-134A refrigerant and added leak detection dye to the system. Run the A/C system to circulate the leak detection dye and check for leaks: Checked A/C system pressure after service: Low side pressure High side pressure Checked center vent temperature after service Recommendations: Found leak at ac compressor , recommend ac compressor , suction hose replacement and more 134a
Marcellus M. gave our service a 5 star review on 2/27/2026 -
2016 RAM 1500
Mileage153,972Service Date2/20/2026Services Performed- Diagnostic Steps; Step 1. Tried to start the vehicle. The vehicle would not start due to a dead battery. Step 2. Charged the battery and tried to start the vehicle. The vehicle started and is currently misfiring. The check engine light is intermittently flashing. Step 3. Scanned the vehicle for diagnostic trouble codes. Found powertrain control module codes P0158 (bank 2 sensor 2 oxygen sensor circuit high), P0138 (bank 1 sensor 2 circuit high), P0152 (bank 2 sensor 1 circuit high), P0132 (bank 1 sensor 1 circuit high), P1129 (closed loop fuel fueling not achieved – bank 2), P1128 (closed loop fueling not achieved – bank 1), P0300 (multiple cylinder misfires), and P0507 (idle speed performance higher than expected). Step 4. Using a scan tool checked misfire counters. Found cylinders 5, 4,6,7, and 8 have misfires. Cylinder 5 has the most. Step 5. Checked mechanical condition of the engine using a vacuum gauge. Verified there is a mechanical failure due vacuum gauge is bouncing indicating there is a failure in the valve train. Step 6. Checked compression on cylinders 4 and 5. Found compression is excessive (250 pounds per square inch and 245 pounds per square inch). Correction – Recommend removal of valve covers to check valve train.
- Removed valve covers, inspected valve train and found multiple broken valve springs causing misfires. Recommend remove cylinder heads and replace valve springs with valve seats as preventative repairs.
- Removed rocker assemblies from both cylinder heads to close valves. Performed cylinder leak test on all eight cylinders and found cylinders eight- bank 2 and seven- bank 1 wont hold pressure and leaking past intake valves, cylinder seven valve spring is visibly broken, cylinder eight spring appears ok. Removed all valve springs and seals on bank 1 including cylinder seven and all cylinders on bank 1 hold pressure and pass leak check. Removed and replaced cylinder eight intake valve spring and performed cylinder leak check and valve still leaking past intake valve. Recommend removing cylinder head and have cylinder eight intake valve with valve seats replaced for bank 2 cylinder head.
- Removed cylinder head to send for repair. Repaired cylinder head. Installed cylinder head with new gaskets. Test drove. Found that engine reaches normal operating temperature the vehicle runs rough and has set faults for the oxygen sensors. Recommend replacing 2 upstream and 2 down stream sensors. Replaced sensors. Vehicle now drives per design at operating temperature.
- Repaired cylinder head valves and valve seats.
- OXYGEN SENSOR – Remove & Replace – V8 Each
- OXYGEN SENSOR – Remove & Replace – V8 Each
- OXYGEN SENSOR – Remove & Replace – V8 Each
- OXYGEN SENSOR – Remove & Replace – V8 Each
Joe L. gave our service a 5 star review on 2/20/2026 -
2015 Audi A6 Quattro
Mileage27,555Service Date2/18/2026Services Performed- Performed On Board Diagnosis (OBDII) Inspection, Visual Emission Control System Inspection and Visible Smoke Test Inspection. Also performed Malfunction Indicator Light Functional Test Test Result: Pass
- Performed a visual Inspection and prepared an estimate for parts and labor.
Sandra G. gave our service a 5 star review on 2/19/2026
BG Products
We have two Locations to serve you best
CSAI Auto Repair Center
Hours
Mon-Fri : 8am-5pmSat-Sun : Closed
Address
CSAI Auto Service
3001 Chicago Ave
Riverside, CA 92507
CSAI Smog Check Center
Hours
Mon-Fri: 8am-5pmSaturday: 9am-2pm
Sunday: Closed
Address
CSAI Smog Check Center
6589 Magnolia Ave
Riverside, CA 92506
