2021 Hyundai Brake Service Best Practices TSB 21-BR-002H
Hyundai Technical Service Bulletin (TSB) 21-BR-002H provides comprehensive best practice recommendations for brake service procedures across various 2021 Hyundai models. This includes detailed guidance on rotor machining, caliper and pad maintenance, Electronic Parking Brake (EPB) service, and…
David Chen2021 Hyundai Tucson
S'applique également à
- Hyundai Accent
- 2021
- Hyundai Elantra
- 2021
- Hyundai Kona
- 2021
- Hyundai Palisade
- 2021
- Hyundai Santa Fe
- 2021
- Hyundai Sonata
- 2021
- Hyundai Veloster
- 2021
- Hyundai Venue
- 2021
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Hyundai has issued Technical Service Bulletin (TSB) 21-BR-002H to provide comprehensive best practice recommendations for technicians performing brake service procedures on various 2021 Hyundai models, including the Tucson, Accent, Elantra, and Santa Fe. This bulletin, which supersedes the previous TSB 10-BR-001, incorporates new grease recommendations and updated service best practices. Adhering to these guidelines helps ensure the longevity and optimal performance of your vehicle's braking system.
This TSB outlines critical steps for maintaining brake components, from rotor machining and caliper lubrication to specific procedures for vehicles equipped with Electronic Parking Brakes (EPB). Following these Hyundai brake service best practices is essential for safe and effective brake operation.
Important Warnings for Brake Service
Hyundai emphasizes several critical warnings to ensure safety and proper function during brake service:
- "Do not hang the caliper with the brake hose." This can damage the brake hose.
- "Do not touch any system buttons while performing this function." (During Assembly Check for EPB).
- "Do not reuse drained fluid." Always use fresh brake fluid.
- "Always use genuine DOT3 or DOT4 brake fluid as recommended in the applicable vehicle shop manual. Using non-genuine DOT3 or DOT4 brake fluid can cause corrosion, and can decrease the life of the system."
- "Do not spill brake fluid onto the vehicle. This may lead to paint damage. If brake fluid comes in contact with any paint surface, wash the surface off immediately with water."
- "When bleeding air, ensure that the fluid level never drops below halfway between MIN and MAX in the reservoir." If the level drops too low, air can enter the system, requiring the bleeding procedure to be restarted.
- "Prevent any grease from touching the shoe lining or drum friction surfaces." This can severely impair braking performance.
Recommended Tools and Parts
Proper tools and genuine Hyundai parts are crucial for effective brake service. TSB 21-BR-002H lists specific items:
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------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------The provided text is a Technical Service Bulletin (TSB) from Hyundai, TSB 21-BR-002H, titled "BRAKE SERVICE BEST PRACTICE RECOMMENDATIONS". This TSB supersedes 10-BR-001. It covers best practice recommendations for brake service procedures across all Hyundai vehicles, specifically listing the 2021 Hyundai Tucson, Accent, Elantra, Veloster, Santa Fe, Palisade, Venue, Sonata, and Kona in the provided NHTSA data. The document details procedures for front and rear brake rotors, floating and fixed-type calipers/pads, rear brake drums/shoes/components, brake fluid service, and brake caliper fluid inspection. It also mentions specific part numbers for tools and lubricants, and addresses the Electronic Parking Brake (EPB) system, including a DTC C1710 related to its assembly check. The document includes several warnings and cautions regarding proper service techniques and the use of specific fluids and parts. I will structure the article to cover these aspects comprehensively.```json {
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Frequently Asked Questions
- What is Hyundai TSB 21-BR-002H about?
- Hyundai TSB 21-BR-002H provides best practice recommendations for technicians performing brake service procedures on various 2021 Hyundai models. It covers detailed steps for maintaining brake rotors, calipers, pads, drums, shoes, and brake fluid, ensuring optimal braking performance and safety.
- Why is the Brake Pad Change Mode important for vehicles with an Electronic Parking Brake (EPB)?
- For Hyundai vehicles equipped with an Electronic Parking Brake (EPB), the Brake Pad Change Mode must be activated before removing the rear calipers. This function retracts the caliper piston, allowing for proper service and preventing damage. After service, an Assembly Check function should be performed, especially if a DTC C1710 is present, to ensure correct EPB operation.
- What type of brake fluid should I use for my Hyundai?
- Hyundai TSB 21-BR-002H specifies that only genuine DOT 3 or DOT 4 brake fluid, as recommended in your vehicle's shop manual, should be used. Using non-genuine fluid can lead to corrosion and reduce the lifespan of the braking system. It's also crucial to prevent the fluid level from dropping below halfway between MIN and MAX during bleeding to avoid introducing air into the system.
- What are the key warnings for handling brake fluid during service?
- Key warnings include never reusing drained fluid, always using genuine DOT 3 or DOT 4 fluid, preventing contamination, and avoiding spills on the vehicle's paint. During brake bleeding, ensure the fluid reservoir level never drops below the halfway mark between MIN and MAX to prevent air from entering the system, which would require restarting the entire bleeding procedure.
- How can I tell if a fluid leak around the brake caliper piston is brake fluid or assembly oil?
- TSB 21-BR-002H describes a method to distinguish between brake fluid and assembly oil. After collecting a sample with a cotton swab, draw horizontal lines on paper with an oil or water-based ink pen. If the collected fluid smears the ink lines when wiped vertically, it's likely brake fluid. If it doesn't smear, it's likely assembly oil.
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