Why is the windshield heated? Rapid 2021 - not a luxury, but a necessity?
Winter in Russia means not only snowy landscapes, but also the morning struggle with ice on the windows. Owners Škoda Rapid 2021 models equipped with the heated windshield option save up to 15 minutes time to warm up the car and avoid the risk of damaging the glass with a scraper. However, not everyone knows that such glass requires a special approach - from choosing an original part to proper installation.
Heated windshield Rapid implemented through thin threads of heating elements soldered into triplex. The system activates automatically at temperatures below +3°C or manually through the menu Climatronic. But here lies the first catch: non-original glass often has incorrect thread resistance, which leads to overheating and cracks after just 1–2 seasons. In this article, we’ll look at how to choose the right glass, how much replacement costs, and how to avoid common mistakes.
Original vs analogue: articles and prices for windshields for Rapid 2021
Official article number of the original heated windshield for Škoda Rapid (body NH3, 2021) — 5NM 845 011 J. This glass is produced by the company Saint-Gobain Sekurit by order of the concern Volkswagen Group. The cost from official dealers ranges from 42,000 to 48,000 rubles, depending on the region. The kit includes sealing rubber and mounting clips.
Among analogues, the most popular glasses are from Pilkington (article NN11460GTN) and XYG (article W710201). Their price is lower - from 28,000 to 35,000 rubles, but here it is important to check the certificate of conformity ECE R43. Cheap Chinese analogues (for example, FYG or BENSON>) often fail the impact test and may crack if hit by a small stone.
- 🔹 Original: Article
5NM 845 011 J, price ~45,000 rubles, 2 year warranty - 🔹 Pilkington: Article
NN11460GTN, price ~32,000 rubles, certificateECE R43 - 🔹 XYG: Article
W710201, price ~29,000 rubles, verified reviews - 🔹 FYG/BENSON: Price from 18,000 rubles, risk of cracks after 6–12 months
⚠️ Attention: When purchasing an analogue, be sure to check glass dimensions (1430×890 mm) and availability holes for the rain sensor (if installed). A discrepancy of even 5 mm will lead to leaks!
- Original (expensive, but reliable)
- Pilkington (best option)
- XYG (budget but high quality)
- Other brand
- I haven't decided yet
How to check the functionality of the heating before purchasing?
Even new glass may have defects in the heating filaments. Before installation, be sure to test with a multimeter. Switch the device to resistance test mode (200 Ω) and connect the probes to the extreme contacts of the threads (they are located on the sides of the glass, under the black edging). Normal resistance for Rapid 2021 — 1.8–2.2 Ohm. If the readings are lower 1.5 Ohm or higher 2.5 Ohm, glass is defective.
Also inspect the threads against light: they should be evenly distributed no tears or thickening. A common problem with cheap glass is the “snake effect,” when the threads move in waves. This leads to uneven heating and local overheating. In the cabin, check the heating operation through the menu Climatronic → Settings → Heated glass. Heating should begin after 30–60 seconds after activation.
Check the article number with the car's VIN|Check the resistance of the threads with a multimeter|Inspect the glass against light (no thread breaks)|Make sure there are holes for the sensors|Check the package (seal, clips)
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Replacement Cost: Dealer vs Independent Service
From official dealers Škoda Replacing a heated windshield costs 12,000–15,000 rubles. This amount includes dismantling the old glass and installing a new one with sealant. SikaTack, camera calibration Front Assist (if there is one) and checking the heating system. The main advantage is the warranty for work (1 year) and original consumables.
Independent services charge for the same work 7,000–10,000 rubles, but there are nuances here:
- The sealant used is often cheaper (e.g. 3M PU590 instead of SikaTack), which can lead to leaks after 1–2 years.
- Not all workshops have camera calibration equipment
Front Assist, and without it the system will not recognize pedestrians and signs. - Labor warranty is usually limited 6 months.
| Service type | Cost of work | Sealant | Camera Calibration | Warranty |
|---|---|---|---|---|
| Official dealer | 12 000–15 000 ₽ | SikaTack (original) | Yes | 1 year |
| Certified service | 9 000–11 000 ₽ | 3M PU590 or Dow Automotive | Yes (additional 1,500 rubles) | 1 year |
| Independent workshop | 7 000–9 000 ₽ | Budget analogue | No (risk of system errors) | 6 months |
⚠️ Attention: If after replacement the icon lights up on the dashboard Front Assist (yellow shield with an exclamation mark), the camera is not calibrated! Operate the vehicle in this condition it's impossible — the emergency braking system will be disabled.
Typical replacement mistakes and how to avoid them
The most common problem is damage to heating filaments during installation. This happens if the technician uses metal spatulas to remove the old glass or puts too much pressure on the new glass. As a result, the threads break and heating stops working in certain areas. To avoid this, make sure the service uses plastic spatulas and special suction cups for glass.
Second mistake - incorrect sizing. If the sealant is applied unevenly or with breaks, leaks will appear over time, and the glass will begin to “hum” at higher speeds 100 km/h. Check after installation:
- 🔧 No gaps between the glass and the body (visually and to the touch).
- 🔧 Uniformity of the adhesive seam - it should be the same thickness around the entire perimeter.
- 🔧 No bubbles in the sealant (visible through light).
What happens if the glass is installed incorrectly?
A leaky seam will lead to water entering the interior (risk of corrosion of the electronic units under the dashboard) and the formation of condensation between the layers of triplex. False alarms of the system are also possible Front Assist due to camera displacement. In the worst case, the glass may fly out in an accident due to weak fixation.
How to care for heated glass: 5 rules
Heated windshield is not only comfort, but also an additional load on the car’s electronics. To make your system last longer, follow these recommendations:
- Do not turn on the heating on dry glass. Always scrape the ice first (but without pressing!), and then turn on the heat. Otherwise, the threads will overheat and the glass may crack.
- Use special liquids. Ordinary water for washing off dirt in winter freezes in microcracks. Better to use washer with de-icer (for example, Liqui Moly Antifrost).
- Do not apply tint to the heating zone. The film blocks infrared radiation, and the system runs idle, overheating the glass.
- Check the fuse. The fuse is responsible for heating
F37 (10A)in the block under the steering wheel. If the system does not turn on, check it first. - Avoid high pressure washing. Jetting water at an angle can damage the sealant and cause leaks.
If the heating is weak, check the voltage at the glass contacts (should be 12–14 V). Often the problem lies in oxidized connectors under the hood (fuse box SB22).
Frequent malfunctions and ways to solve them
If the heated windshield stops working, the reasons may be either in the glass itself or in the car’s electronics. Let's look at typical symptoms and solutions:
| Symptom | Possible reason | Solution |
|---|---|---|
| Heating doesn't turn on at all | Fuse blown F37 or the relay is faulty J317 |
Replace fuse (10A). If it doesn’t help, relay diagnostics |
| Only certain zones are heated | Broken heating threads or poor contact in connectors | Check the resistance of the threads with a multimeter. Clear contacts |
| The heating works, but the glass does not defrost | Low voltage in the on-board network or dirty glass from the inside | Check the battery charge. Clean the glass with alcohol (not acetone!) |
An error appears Front Assist |
Camera displacement after glass replacement | Camera calibration at a service station (cost ~3,000 rubles) |
If the problem is broken threads, repairs are only possible in specialized workshops (for example, GlassMedic). The cost of restoring one thread is from 1,500 to 3,000 rubles. However, if there is a lot of damage, it will be cheaper to replace the glass.
Never use metal blade scrapers or abrasive cleaners to clean heated glass! This leads to microcracks that grow over time.
FAQ: Answers to frequently asked questions
Is it possible to install heated glass on Rapid 2021 if it didn't come from the factory?
Technically yes, but the electrical wiring will need to be modified (connection to the unit BCM) and setting the activation button. The cost of such modernization is from 15,000 rubles (excluding glass price). Please note that The vehicle warranty will be void, if the work is carried out by an unofficial service.
How long does it take to replace heated glass?
On average, the procedure takes 3–4 hours, including drying the sealant. If camera calibration is required Front Assist, time increases to 5–6 hours. Some services offer an “express replacement” in 2 hours, but in this case the sealant may not cure completely, which will lead to leaks.
Is it possible to tint a heated windshield?
Yes, but only top part (a strip no wider than 14 cm) and using athermal film, which does not block infrared radiation. Full tinting disrupts the operation of the heating and may result in denial of warranty service. Also note that windshield tinting prohibited by traffic rules (fine 500 rubles).
How often should the heating work be checked?
It is recommended to test the system every season - before and after winter. To do this, just turn on the heating for 5-10 minutes and check the uniformity of heating with your hand (beware of burns!). Also inspect the glass for microcracks or clouding - these are the first signs of overheating of the threads.
Does heated glass affect fuel consumption?
Yeah, but not much. When activating the heating load on the generator increases by 50-70 W., which is equivalent to the inclusion of a passing beam. In practice, it adds to this. 0.1–0.3 l/100 km fuel consumption. However, saving time on warming up the car in winter covers this minus.