If on your dashboard ŠKODA Rapid malfunction icon comes on GLONASS/ERA-GLONASS, and the on-board computer gives an error like U111300 or B1000, don't panic. This problem occurs among owners of 2012–2023 model years, and in 80% of cases it can be fixed without expensive repairs. In this article we will look at all possible reasons - from a banal firmware failure to hardware failures of the antenna or control unit, and we will also give step by step instructions for diagnostics and repair.

System ERA-GLONASS in Rapid integrated with standard navigation and emergency call (Era-GLONASS), so its malfunction can affect not only the determination of coordinates, but also the operation eCall in case of an accident. However, not all errors are critical: some simply signal a temporary failure in communication with satellites. The main thing is to correctly identify source of the problemso as not to waste money on unnecessary replacement of components.

What GLONASS errors occur in the ŠKODA Rapid: deciphering the codes

B Rapid the GLONASS system can generate errors in two formats: through on-board computer (on the display between the speedometer and tachometer) or during diagnostics with a scanner (for example, VCDS, ODB2). Below are the most common codes and their meaning:

  • 🔴 U111300 — There is no connection with the GLONASS antenna. Most often caused by a cable break, oxidation of connectors, or damage to the antenna itself (located under the windshield).
  • 🟡 B1000 — Error initializing ERA-GLONASS module. May appear after a firmware update or reset of the on-board system settings.
  • 🔵 U112100 — Incorrect satellite data. Indicates problems with the signal (for example, in a tunnel or when shielded with metal tinting).
  • ⚠️ P163A00 — Malfunction of the ERA-GLONASS control unit. Requires in-depth diagnostics, as it may be associated with overheating or corrosion of the board.

If the display shows satellite icon with exclamation point, but the scanner does not show a specific code, the problem may lie in software glitch or a disabled function in the settings. For example, in some versions Rapid After replacing the battery, the GLONASS system is automatically deactivated.

📊 How often do you experience GLONASS errors in your ŠKODA Rapid?
  • Once a month
  • Only after the rain
  • Constantly on
  • Never happened
  • I find it difficult to answer

Where is the antenna and GLONASS unit located in the ŠKODA Rapid

To check the system yourself, you need to know the location of the key components:

  • 📡 GLONASS antenna - installed under the top of the windshield, closer to the interior mirror. It looks like a small black rectangle (size ~5x3 cm) with a cable going deep into the dashboard.
  • 🖥️ ERA-GLONASS control unit - in most versions Rapid located behind the glove compartment (to the right of the passenger seat) or under the center console. Has a metal case with the inscription ERA-GLONASS.
  • 🔌 fuse - responsible for powering the system, located in mounting block under the steering wheel (fuse number - SC30 or SC42, depending on the year of manufacture).

To access the antenna you will have to remove plastic ceiling lining (it is attached with latches). Be careful - the antenna cable is fragile and can break if not handled carefully. In 30% of cases there is an error U111300 caused precisely by a broken wire at the base of the antenna.

Component Location Typical faults
GLONASS antenna Under the windshield (center) Cable break, connector corrosion, mechanical damage
ERA-GLONASS block Behind the glove compartment or under the console Overheating, firmware failure, contact oxidation
Fuse SC30/SC42 Mounting block under the steering wheel Burnout, oxidation of legs
CAN bus Passes along the dashboard Interference, short circuit

Step-by-step diagnostics: how to find the cause of the error

Before going to the service center, complete self-check according to this algorithm:

Check fuse SC30/SC42 (remove and inspect for blown)

Open the glove compartment and make sure that the ERA-GLONASS unit connector is tightly connected

Visually inspect the antenna for damage (cracks, traces of moisture)

Reset the error through the on-board computer menu (Settings → Service → Reset errors)

Try updating the firmware of the ERA-GLONASS unit (instructions below) -->

If after resetting the error appears again, connect diagnostic scanner (for example, VCDS or ELM327) and check:

  1. CAN bus status - if there are errors like U112100, the problem may be a broken connection between the blocks.
  2. Voltage on the ERA-GLONASS unit - must be 12–14 V (with the engine running). If less, look for a problem in the wiring or battery.
  3. Antenna signal strength - in the scanner menu, find the option GPS/GLONASS Signal Strength. If the value 0 or No Signal, the antenna is faulty.
⚠️ Attention: If the GLONASS error appears for the first time after replacing the battery, do not rush to change the antenna. First do reset adaptations via scanner (ERA-GLONASS → Basic Settings → Reset Adaptations). In 60% of cases this solves the problem.

How to fix the GLONASS error yourself

Depending on the cause, repairs can take from 10 minutes to several hours. Let's consider the most effective ways:

1. Reset the error via the on-board computer

If the error appeared after a firmware update or power failure, try resetting it programmatically:

  1. Start the car and wait until the multimedia system boots up.
  2. Press and hold the button SETUP (or MENU) on the steering switch for 5 seconds.
  3. Go to Settings → Service → Diagnostics → Reset errors.
  4. Select an item ERA-GLONASS and confirm the reset.

2. Checking and replacing the fuse

fuse SC30 (10 A) or SC42 (15 A) is responsible for powering the ERA-GLONASS unit. To check it:

  1. Open the cover of the mounting block under the steering wheel (pull the lower edge of the trim).
  2. Remove the fuse using tweezers (the location diagram is on the back of the cover).
  3. Examine it for an item filament burnout or oxidation of the legs. If necessary, replace with a new one.
💡

If the fuse blows again after replacement, this indicates short circuit in the chain. In this case, you need to check the wiring from the ERA-GLONASS unit to the antenna with a multimeter.

3. Updating the firmware of the ERA-GLONASS unit

Outdated software may cause conflicts with other vehicle systems. To update:

  1. Download the latest firmware for your version Rapid from the official website ŠKODA (section Support → Software Updates).
  2. Copy the file to the USB flash drive (format FAT32).
  3. Insert the flash drive into the car's USB port and go to Settings → Software update → ERA-GLONASS.
  4. Follow the instructions on the screen. Don't turn off the ignition during the process (takes ~10–15 minutes).
⚠️ Attention: If after updating the ERA-GLONASS unit stops responding (the communication indicator is not lit), this may mean that the firmware is not suitable for your version Rapid. In this case it is required rollback to previous version through a service scanner.

When you can’t do without a service: difficult cases

If self-help does not help, the problem may be hardware. Contact the service if:

  • 🔧 The antenna is physically damaged (cracks, traces of corrosion, cable break). Replacement will cost 3 000–5 000 ₽ (depending on the antenna model).
  • 🔥 The ERA-GLONASS unit is overheating (can be identified by the characteristic burning smell from under the glove compartment). In this case, the block needs to be replaced (15 000–25 000 ₽).
  • 📶 No signal from satellites even after replacing the antenna. This may indicate interference from tinting (the metallized film shields the signal) or a CAN bus malfunction.

The service may also offer reflash the block for your version of the car, if the standard update did not work. The average cost of such a service is 2 000–4 000 ₽.

What happens if you ignore the GLONASS error?

If the malfunction is not corrected, the system Era-GLONASS will not be able to automatically transmit accident data to emergency services. This means that in the event of an accident:

- The response time of rescuers will increase (no automatic notification).

- The insurance company may doubt the circumstances of the accident (there is no confirmation of coordinates).

- In some regions of the Russian Federation, the traffic police inspector may issue fine for malfunction of mandatory equipment (up to 500 rubles under Article 12.5 of the Administrative Code).

Prevention: how to avoid GLONASS errors in the future

For the system to work stably:

  • 🔋 Check your battery voltage regularly. If it falls below 11.8 V, the ERA-GLONASS unit may reset its settings.
  • 🚿 Avoid high pressure washing in the windshield area - water can penetrate under the antenna and cause corrosion.
  • 📱 Do not install metallic tint — it blocks the satellite signal.
  • 🔄 Update the firmware at least once every 2 years (current versions correct communication errors).

If you often travel in regions with weak GLONASS coverage (for example, in mountains or tunnels), error U112100 may appear periodically. In this case, it is enough to reset it through the on-board computer - this is not a critical malfunction.

FAQ: answers to frequently asked questions

Is it possible to drive with a GLONASS error if the car is working normally?

Technically yes, but not recommended. The ERA-GLONASS system is responsible for emergency calls in the event of an accident, and its malfunction may complicate obtaining assistance. In addition, in some cases this is considered a violation of traffic rules (Article 12.5 of the Administrative Code).

How much does it cost to replace the GLONASS antenna in a ŠKODA Rapid?

The cost of a new antenna is from 2,500 to 4,000 rubles, replacement work - 1 500–2 500 ₽. Total: 4 000–6 500 ₽. On some models Rapid after 2018, the antenna comes complete with a rain sensor, which increases the price to 8 000 ₽.

Is it possible to disable ERA-GLONASS so that the error does not appear?

It is possible to physically turn off the system (for example, remove the fuse), but this illegally. According to the law of the Russian Federation, all cars after 2017 must be equipped with the Era-GLONASS working system. When checking, the traffic police may fine you 500 ₽.

Why does the GLONASS error appear only after rain?

This is a sign moisture ingress into the antenna connector or ERA-GLONASS unit. Check the cable seals under the windshield and treat the contacts if necessary silicone grease (for example, Liqui Moly Silicon-Spray).

Can tinting affect the operation of GLONASS?

Yes, if used metallized film. It shields the satellite signal, causing the system to lose communication. The solution is to replace the tint with athermal (without metal coating) or install an external antenna.