PY21W BAU15S LED Turn Signal Bulb — High-brightness CANBUS PY21W/BAU15S amber LED turn signal bulb, error-free, sold as a pair. It is CANBUS-ready and ships pan-India.
Specifications & Compatibility
| 🏷️ Brand | TecUpdater |
| 📦 Quantity / UOM | 1 Pair |
| ♻️ Return / Exchange | Exchange only |
| 🔌 Available Connector Types | PY21W BAU15S (Amber & White) |
| 🔋 Voltage | 12V – 24V |
| 🎨 Color Options | Amber |
| 🚗 Applications | Turn Signals, Reverse Lights |
| ⏳ Lifespan | 30,000+ hours |
| 🔧 Installation | Plug-and-Play |
| ✅ Compatibility | Suitable for most Indian car models |
Upgrade your vehicle’s lighting with TecUpdater PY21W BAU15S LED bulbs, designed for superior visibility, instant response, and CANBUS-compatible performance. These premium LED bulbs replace standard halogen turn signals and reverse lights, providing a modern look, enhanced safety, and energy-efficient operation.
PY21W BAU15S LED Turn Signal Bulb — Overview
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Key Features & Benefits
Instant On/Off Response
- Unlike halogen bulbs, which take milliseconds longer to illuminate, PY21W BAU15S LEDs light up instantly, reducing reaction time and increasing road safety.
High Brightness & Energy Efficiency
- Advanced LED technology delivers bright, clear illumination while consuming significantly less power than conventional halogen bulbs.
- Ideal for long-term use without overloading your vehicle’s electrical system.
CANBUS-Compatible & Hyperflash-Free
- Fully compatible with modern vehicle CANBUS systems.
- Eliminates flickering, dashboard errors, and hyperflash issues often caused by LED upgrades.
Durable & Heat-Resistant Design
- Built to withstand harsh weather and extreme temperatures, ensuring consistent performance over tens of thousands of hours.
- Resistant to vibration, UV, and thermal stress, making them reliable for Indian road conditions.
Easy Plug-and-Play Installation
- Direct replacement for most vehicles using PY21W / BAU15S sockets.
- No extra resistors, wiring modifications, or coding required.
- Simple DIY installation in minutes.
Amber vs. White LED Options
Amber PY21W BAU15S LED Turn Signal Bulbs
- Crisp, highly visible amber light for safer signaling.
- Ensures other drivers notice your indicators clearly, even in bright daylight or adverse weather.
White PY21W BAU15S LED Reverse Lights
- Bright white illumination for superior rear visibility.
- Enhances safety when reversing in low-light conditions or crowded areas.
Advantages Over Halogen Bulbs
- Longer Lifespan: Over 30,000 hours of continuous use.
- Energy Savings: Lower power consumption without sacrificing brightness.
- Modern Aesthetics: Sleek, premium lighting for a refreshed vehicle look.
- Enhanced Road Safety: Brighter signals and reverse lights improve visibility for other drivers.
Installation Guide
- Check Compatibility: Confirm your vehicle supports PY21W BAU15S LED bulbs.
- Turn Off Vehicle: Remove the existing halogen bulb carefully.
- Insert LED Bulb: Ensure a snug, secure fit in the socket.
- Test Functionality: Turn on the lights to verify proper operation before finishing installation.
Vehicle Compatibility
PY21W BAU15S LED bulbs are compatible with most Indian cars, including:
- Maruti Suzuki: Swift, Baleno, Brezza, Alto, WagonR
- Hyundai: i20, Creta, Verna, Grand i10
- Tata Motors: Nexon, Harrier, Tiago
- Mahindra: XUV700, Thar, Scorpio
- Honda: City, Amaze, Jazz
Always check your vehicle’s manual or consult your dealer before purchase to confirm fitment.
Why Choose TecUpdater PY21W BAU15S LED Bulbs?
This PY21W BAU15S bulb is built with a CANBUS resistor already integrated, so it swaps into the factory socket without triggering a fast-flash “bulb out” warning on vehicles that watch for it.
Installation is a direct plug-in — no relay or separate resistor kit needed.
FAQs
This PY21W BAU15S LED bulb pair carries a 6 month warranty against manufacturing defects.
This product is covered under an exchange-only policy, so a wrong, damaged, or defective pair can be swapped by reaching out to TecUpdater support with your order details.
It is sold as 1 pair, so both turn signal or reverse light positions on your vehicle are covered by a single order.
Yes. It is a direct plug-in replacement for the stock PY21W/BAU15S socket, with a CANBUS resistor already integrated, so no relay, no separate resistor kit, and no wiring modification are needed.
The amber version is the one intended for turn signals, hazard lights, and side markers, since amber signaling is what other drivers expect to see and is easier to notice in daylight. The white version on this listing is meant for reverse lights, so keep amber for indicators and white for reverse to match each circuit’s intended use.
The page lists compatibility with Maruti Suzuki Swift, Baleno, Brezza, Alto, and WagonR, Hyundai i20, Creta, Verna, and Grand i10, Tata Nexon, Harrier, and Tiago, Mahindra XUV700, Thar, and Scorpio, and Honda City, Amaze, and Jazz. Since socket fitment can still vary by trim and year, it is best to check your vehicle’s manual or with your dealer before ordering.
Modern cars monitor bulb current draw electronically, and a standard LED draws far less current than the halogen bulb it replaces, which the car’s computer can read as a fault, causing rapid hyperflashing or a dashboard warning. This bulb has a CANBUS resistor built in that mimics the halogen bulb’s electrical load, so it operates without triggering that fault.
Yes, it is rated for a 12V to 24V voltage range, so it works on both standard 12V passenger vehicles and 24V systems.
LED turn signals and reverse lights reach full brightness essentially instantly, whereas halogen filaments take a small but measurable moment to heat up and light fully, so the instant on-off response of this bulb slightly improves how quickly your signal or reverse light is visible to others.
No, the CANBUS resistor is already built into the bulb itself, so there is nothing extra to wire in.
Aruna Jha –
I have installed in my Polo. As they promised there is no hyper flash or error. The indicators are very very bright. Plug and play. It took me 5 minutes to install. Great experience.