Hyundai Azera Neutral Safety Switch: A Complete Guide for 2006-2017 Models
If your Azera won't start or the gear indicator is wrong, your neutral safety switch could be the problem.
- A no-start condition is the most common sign of failure for this part on an Azera.
- Per Hyundai TSB 17-AT-005, the problem may only be a misaligned switch, which can be adjusted without replacement.
- When installing a new switch, it MUST be properly aligned in the Neutral position to function correctly.
- This part is also called an 'Inhibitor Switch' or 'Transmission Range Sensor'.
Is Your Azera's Neutral Safety Switch Failing?
When the neutral safety switch (also called an inhibitor switch by Hyundai) begins to fail on an Azera, the symptoms are usually very noticeable. Because this part is essential for starting the car, a complete failure can leave you stranded. Pay attention to these common signs.
- Car Won't Start: This is the most common symptom. You'll turn the key or press the start button, and nothing happens—no crank, just silence or a single click. Sometimes, it might start in Neutral but not in Park, or you might have to jiggle the shifter to find a sweet spot where it will start.
- Check Engine Light: A faulty switch can send bad information to the car's computer, triggering the Check Engine Light. You will likely find diagnostic trouble codes like P0705, P0707, or P0708. 🎬 See common causes and fixes for the P0705 trouble code.
- Incorrect Gear Display: The gear indicator on your dashboard (P, R, N, D) may not match the actual gear the shifter is in, or it may not light up at all. 🎬 Watch how a faulty sensor causes gear display issues.
- No Reverse Lights: The switch controls the backup lights, so if they stop working when you shift into Reverse, the switch is a likely culprit.
- Starts in Any Gear: In rare and dangerous cases, the switch can fail in a way that allows the car to start in Drive or Reverse. This is a critical safety issue that needs immediate attention.
A Critical TSB for Azera Owners
Hyundai has issued a Technical Service Bulletin (TSB 17-AT-005) for the Azera that deals with this exact part. It notes that symptoms like a no-start condition or DTC P0705 can be caused by a switch that is simply out of alignment, not necessarily broken. Before buying a new part, a mechanic may be able to solve the issue by correctly adjusting the existing switch. This is a crucial piece of vehicle-specific information that can save you money.
Choosing the Right Aftermarket Switch
For a critical electronic part like this, quality matters. While the original Hyundai part is always an option, several aftermarket brands offer a good balance of price and performance. Here’s a breakdown of the available choices.
Brand Quality Tiers
- Premium Aftermarket (Beck Arnley): Beck Arnley specializes in parts for Asian vehicles and has a strong reputation for sourcing components from the same factories that supply the original automaker. For an electronic part like this, choosing Beck Arnley is the closest you can get to OEM quality without the OEM price tag.
- Standard Replacement (Standard Ignition - SMP): Standard Motor Products is a well-known aftermarket manufacturer with decades of experience. Their parts are generally considered reliable, direct-fit replacements that meet original specifications. This is a solid, dependable choice for most repairs.
- Economy (True Tech): True Tech represents a budget-friendly option. While it will get your car running again and solve the immediate problem, its long-term durability may not match that of the premium brands. This is a viable choice if the budget is the primary concern.
Installation is Key
Regardless of the brand you choose, correct installation is what matters most. The neutral safety switch on the Azera must be properly aligned during installation. The mounting holes are slotted to allow for adjustment. If this step is skipped, even a high-quality new part will cause the same problems. Many mechanics use a 5mm drill bit or pin to ensure perfect alignment as described in the TSB.
🎬 Watch this step-by-step guide on testing and replacing the switch.Typical Replacement Costs
The cost to fix your Azera's neutral safety switch depends on whether you do it yourself or use a repair shop. The part itself is affordable, but labor can add to the total.
| Item | Estimated Cost |
|---|---|
| New OEM Part | $85 - $130 |
| New Aftermarket Part | $45 - $72 |
| Shop Labor | $120 - $250 |
| Total (Shop Repair) | $165 - $322 |
Frequently Asked Questions
Is a neutral safety switch the same as a transmission range sensor?
Yes, on the Hyundai Azera and most modern cars, they are the same part. It performs both the safety function (allowing start only in P/N) and the sensor function (telling the computer the gear position).
Can I drive with a bad neutral safety switch?
It's not recommended. If the car won't start, you'll be stranded. If it starts in gear, it's a major safety hazard. If it's causing intermittent starting, it will eventually fail completely, likely at the worst possible time.
How do I know if it's the switch or my starter?
A key sign of a bad switch is inconsistency. If the car starts in Neutral but not Park, or if jiggling the shifter helps, the switch is the likely problem. If you hear a rapid clicking from the engine bay when you try to start, it could be a weak battery, while a single, solid click could point to the starter solenoid. However, a dead silent switch can mimic a dead starter, so diagnosis is key.
Does the new switch need to be adjusted?
Absolutely. This is the most critical part of the installation. The switch must be precisely aligned with the transmission's manual shaft when it is in the Neutral position. Failure to do this will result in the car not starting, even with a brand new part.
Helpful Videos
Technical Specifications
OEM Part Numbers: 42700-3B700 42700-39055 42700-3B010 42700-3B710
Located on the exterior of the automatic transmission case, connected to the manual shift lever shaft.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Hyundai Azera: