Comfort block (or comfort module) in cars Škoda Tour - This is a key element of electronics responsible for controlling the central locking, lighting, power windows and other convenience systems. Without it, many of the functions that modern drivers are accustomed to will simply stop working. However, not all owners know how to correctly diagnose malfunctions of this module or configure it to suit their needs.

In this article we will look at operating principle of the comfort unit, its main functions, typical errors (for example, 01552 or 02746), and also give practical advice on repair and replacement. We will pay special attention to models Octavia Tour (including restyled versions), but some of the information is also relevant for other cars of the concern VW Group with similar systems.

What is a comfort block and where is it located? Škoda Tour?

Comfort block (Comfort Control Module, CCM) is an electronic module that controls:

  • 🔑 Central locking (including remote opening/closing)
  • 💡 Interior, trunk and license plate lighting
  • 🪟 Electric windows and sunroof (if equipped)
  • 🚗 “Comfortable” closing functions (automatic lowering of windows when arming)
  • 🔋 Controlling energy consumption in standby mode (sleep mode)

In the majority Škoda Octavia Tour (including generations 1Z, 5E and MQB) the comfort block is located under the dashboard on the driver's side, next to the fuse box. The exact location depends on the year of manufacture:

Model/Generation Block location Article (original)
Octavia Tour 1Z (1996–2004) Under the steering column, to the left of the fuse box 6Q0 959 433 (until 2000), 6Q0 959 433 B (after 2000)
Octavia Tour 5E (2004–2013) Behind the glove box or under the center console 1K0 959 433 (basic version), 1K0 959 433 L (with function Keyless)
Octavia A7/A8 Tour (2013–present) In the electronics unit under the glove compartment (integrated with BCM) 5Q0 959 433 (MQB platform)

Important: On models after 2013, the comfort unit is often combined with Body Control Module (BCM), which complicates its diagnosis. If your Škoda Tour equipped with a system Keyless Entry, the module may have additional connectors for keyless entry antennas.

📊 What experience do you have with the comfort block?
  • Never encountered
  • Self-diagnosed
  • Changed/repaired
  • Contacted the service

Basic functions of the comfort unit: what can be configured?

Comfort block in Škoda Tour supports a number of settings that can be changed via diagnostic equipment (for example, VCDS or ODBEleven). Here are the key parameters available for customization:

  • 🔄 Automatic closing of windows when arming (function Comfort Closing)
  • 💡 Light off delay interior after closing the doors (from 0 to 60 seconds)
  • 🚨 Alarm activation during sudden braking or impact
  • 🔋 Power Saving Mode (turn off unused modules after 10–30 minutes)
  • 🔑 Setting the tilt sensor sensitivity (for signaling)

To access these settings you will need:

  1. Connect the diagnostic scanner to the connector OBD-II (usually located under the steering wheel).
  2. Select module 46 – Comfort System (or 09 – Cent. Elect. for new models).
  3. Go to section Adaptation or Coding.

On models Octavia Tour with platform MQB (2013+ years) some of the functions of the comfort block have been transferred to BCM, so changing them may require recoding several modules at the same time.

Turn off the engine and remove the key from the ignition switch|

Connect the scanner to the OBD-II connector|

Check battery voltage (must be at least 12.4 V)|

Make sure all doors and trunk are closed|

Make a backup copy of your current settings (if possible)

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Typical comfort unit malfunctions and their causes

Malfunctions of the comfort unit manifest themselves in different ways: from minor glitches (for example, spontaneous opening of doors) to complete system failure. Here are the most common symptoms and their possible causes:

Symptom Possible reason Error code (if any)
The central locking does not respond to the remote control Signal receiver malfunction, key fob battery low, wiring broken 01552 (no connection with key fob)
The power windows only work when the ignition is on. Comfort unit settings failure or relay malfunction J300 02746 (drive power failure)
Interior lighting does not turn off or blinks Short circuit, door sensor fault 01557 (lighting error)
The alarm goes off randomly False response of tilt or shock sensor, contact corrosion 01562 (sensor error)

About 60% malfunctions associated with oxidation of contacts on the unit connectors or blown fuses. For example, fuse S16 (10 A) is responsible for powering the comfort module in Octavia Tour 1Z, and S42 (5 A) - for alarm.

⚠️ Attention: If the comfort unit is completely “dead” (does not respond to diagnostics), check the power circuit 30 and 15 on the connector. Often the problem lies in a broken ground or a blown fuse. S257 (for models MQB).

How to diagnose a comfort block yourself?

For basic diagnostics of the comfort unit in Škoda Tour It is not necessary to go to the service center. All you need is a multimeter and a diagnostic adapter. Here are the step-by-step instructions:

  1. Checking fuses:
    • Open the fuse box (location indicated in the owner's manual).
    • Check the integrity of the fuses S16, S42, S257 (depending on model).
  2. Voltage check:
    • Connect the multimeter to the contacts 30 (constant "+") and 15 (ignition) on the unit connector.
    • The voltage should be 12 V on 30 and appear on 15 when turning the key.
  3. Diagnostics via OBD-II:
    • Connect the scanner and check the module 46 for errors.
    • Errors with the code Uxxxx indicate communication problems with other units (for example, CAN bus).

What to do if the comfort block is not detected by the scanner?

If the scanner does not see the module 46, this could mean:

1. CAN bus break - check the wires CAN-High and CAN-Low on the unit connector (contacts 6 and 14).

2. Malfunction of the unit itself — try connecting a known working module (for example, from disassembly).

3. Eating problems - measure the voltage on the contacts 1 (mass) and 2 (+12 V).

If errors remain after checking the fuses and wiring, you may need to flashing the block or its replacement. On models Octavia Tour before 2010, resetting settings through the command often helps Basic Settings in VCDS.

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Before replacing the comfort unit, be sure to remove its coding through diagnostics! The new module will need to be programmed for your car, otherwise the central locking and alarm system will not work.

Replacing the comfort block: step-by-step instructions

If the comfort unit fails, you can replace it yourself. The main thing is to maintain consistency and not forget about coding of the new module. Let's look at the process using an example Octavia Tour 5E (2004–2013):

  1. Removing the old block:
    • Disconnect the battery (remove the negative terminal).
    • Remove the plastic trim under the steering wheel (snap off the clips).
    • Disconnect the connectors from the comfort unit (usually 2–3 plugs).
    • Unscrew the mounting bolts (torx may be required T20).
  2. Installing a new block:
    • Connect the connectors to the new unit (make sure the pins are not bent).
    • Secure the module in its original place.
  3. Encoding and adaptation:
    • Connect the diagnostic scanner and select the module 46 – Comfort System.
    • Enter the coding of the old unit (if saved) or use the data from the label of the new module.
    • Follow the procedure Basic Settings for synchronization with the immobilizer.

Important: On models with Keyless Entry after replacing the comfort unit you will need retraining keys. To do this:

  1. Insert the key into the ignition.
  2. Turn it to position ON (do not start the engine).
  3. Press the lock button on the remote control - the system should confirm synchronization with a audible alert.
⚠️ Attention: If after replacing the comfort unit the power windows or alarm system stop working, check the settings in the module 09 – Cent. Elect.. Additional adaptation of the window drives may be required (Window Regulator Calibration).

Common repair mistakes and how to avoid them

Many owners Škoda Tour encounter typical problems when trying to repair or replace a comfort unit. Here are the most common mistakes and how to prevent them:

  • ⚡ Ignoring weight check: Poor contact with body (GND) may cause module malfunctions. Always clean the ground points (for example, under the block mounting bolt) and apply contact lubricant.
  • 🔧 Incorrect encoding: Using a code from another vehicle will result in the central locking not working. Always keep the original settings before replacing!
  • 📶 Problems with CAN bus: If errors appear after repair U1121 or U0100, check the integrity of the wires CAN-High and CAN-Low (they often rub under the thresholds).
  • 🔋 Battery drain: During prolonged diagnostics, the voltage may drop below 11.8 V, which will lead to a malfunction of the unit. Use booster or charger.

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If after repairing the comfort unit new errors appear (for example, 01558 — “incorrect door sensor signal”), do not rush to change the module. Check first mechanical part: often the problem lies in dirty contacts of the door or trunk switches.

Alternative solutions: repair vs. replacement

The cost of a new comfort block for Škoda Tour varies from 15,000 to 40,000 rubles (depending on the model and availability of the function Keyless). However, purchasing a new module is not always necessary. Let's look at the alternatives:

Option Pros Cons Cost (approx.)
Repair of the old block Cheaper than replacement, retains original settings Not all workshops undertake repairs, there is a risk of repeated breakdowns 3,000–8,000 rub.
Block from disassembly Price lower than new, often in good condition Requires coding, no guarantee of functionality 5,000–15,000 rub.
New original block 1–2 year warranty, fully compatible High price, coding required 15,000–40,000 rub.
Analog (non-original) Cheaper than the original, suitable for budget repairs Quality may be lower, compatibility issues may occur 8,000–20,000 rub.

If you decide to repair an old unit, pay attention to the following nuances:

  • 🛠️ Soldered contacts: Often board tracks or capacitors fail. Repairs require experience with a soldering iron.
  • 🧹 Cleaning the connectors: Contact oxidation is one of the main causes of failures. Use alcohol and contact lubricant.
  • 🔄 Firmware: After repair, flashing via ODIS or VCDS.

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Before purchasing a disassembled comfort unit, make sure that its article number matches your original module. Even small differences in the index (e.g. 1K0 959 433 L vs. 1K0 959 433 M) may indicate incompatibility!

FAQ: Answers to frequently asked questions about the comfort unit Škoda Tour

Is it possible to drive with a faulty comfort unit?

Technically yes, but it's not safe. Without a working comfort unit you will lose:

  • Central locking (doors will have to be opened with a key).
  • Emergency alarm.
  • Automatic lighting control.

In addition, a faulty module may drain the battery in standby mode.

How to reset the comfort unit settings to factory settings?

To reset settings:

  1. Connect the diagnostic scanner.
  2. Select module 46 – Comfort System.
  3. Go to Basic Settings and select Reset.

On models MQB (after 2013) may need to be reset via 09 – Cent. Elect..

Why does the comfort unit not work correctly after replacing the battery?

This is due to zeroing out adaptations. After a power outage, the comfort unit may “forget” the settings for the windows or central locking. Solution:

  • Swipe Basic Settings for window lifters.
  • Restart the key synchronization procedure.
Is it possible to install a comfort unit from another Škoda model?

Theoretically yes, but only if:

  • The block articles match (for example, 1K0 959 433 suitable for Octavia, Golf and Toura on the platform PQ35).
  • The module supports the same functions (for example, presence/absence Keyless).

In any case it will be necessary coding for your car.

What tools are needed to replace the comfort unit?

Minimum set:

  • Screwdriver TORX T20/T25 (for fastenings).
  • Flat-head screwdriver (for removing cladding).
  • Multimeter (to check voltage).
  • Diagnostic scanner (VCDS, ODBEleven).