Ce Module Impartășesc VW Passat B6 cu Skoda Superb B6 și Seat Exeo
The Volkswagen Passat B6 (3C), Skoda Superb B6 (3T) and Seat Exeo (3R) all draw from the same Volkswagen Group parts pool, but the degree of electronic sharing differs significantly between them. The Passat B6 and Superb B6 share the most — both are built on the PQ46 platform with largely identical body electronics architecture. The Seat Exeo is a different story: it is mechanically derived from the Audi A4 B6/B7, not the Passat, so platform sharing with the Passat and Superb is partial and must be checked part-number by part-number before ordering.
Platform Context: PQ46 Versus Audi B6 Derivatives
Understanding where the sharing starts and stops begins with the platform. The Passat B6 (produced 2005–2010) and Superb B6 (2008–2015, though the 2008–2012 range concerns us here) ride the same PQ46 longitudinal platform. Many of their electronic modules were sourced from the same Continental, Bosch and Hella supply runs, often with no hardware difference between the Passat and Superb variant — only the software calibration and the part-number suffix change.
The Seat Exeo (2008–2013) is mechanically an Audi A4 B7 with Seat bodywork. Its engine management units, ABS modules and transmission control units are Audi A4 B7 derivatives, not Passat B6 units. For body electronics — comfort modules, instrument clusters, climate control — the Exeo uses VW Group common components that do overlap with the Passat B6 in some equipment levels, but the overlap is narrower than buyers often assume. For comparison, see Ce Module-uri Partajează Audi A6 C6 cu VW Passat B6 și Skoda Superb B6.
Modules That Transfer Directly Between Passat B6 and Superb B6
These categories show reliable direct interchange where the hardware is shared and only the software calibration or variant code differs:
- ABS / ESP control unit: Both platforms use Continental Teves MK60EC1 and MK70 units across most variants. The part numbers follow the 3C0 614 xxx and 3T0 614 xxx sequences. Units sourced from either car can be fitted to the other after basic variant coding with VCDS or equivalent — the hydraulic block is identical. Verify that the ABS generation (MK60EC1 vs MK70) and the fitted sensors match before ordering.
- Comfort control module (BCM): The Passat B6 uses a comfort control unit (BCM) under part series 3C0 937 xxx. Superb B6 units run 3T0 937 xxx sequences. The hardware is produced on the same manufacturing line in most cases. Coding must be adapted to the receiving car — window lift parameters, door mirror heating and central locking timing are all stored in the unit’s adaptation channels and will not transfer automatically.
- Steering angle sensor: The G85 steering angle sensor sits on the steering column stalk assembly on both cars. Passat B6 and Superb B6 units are directly interchangeable provided the ESP basic setting is performed after fitting. Part series 1K0 959 654 covers many variants across both models.
- Rain and light sensor: The combined rain/light sensor module (part series 3C0 955 xxx) is shared across Passat B6, Superb B6 and several other PQ46 derivatives. No coding is required beyond variant selection — the module self-adapts.
- Electric power steering control unit: Where both cars are fitted with Bosch EPS (as opposed to hydraulic steering), the control unit part series 3C0 909 144 shows high crossover. Units require steering calibration and VIN-linked coding after replacement.
Modules Where Interchange Is Partial or Requires Attention
- Engine control unit (ECU/DME): Passat B6 engine management is shared with the Audi A6 C6 and certain Q7 4L variants when the same engine code is involved. A Superb B6 with a CBAB 2.0 TDI engine will use the same Bosch EDC17CP14 unit as a Passat B6 with CBAB — but coding, immobiliser adaptation and injector quantity codes must all be transferred. Plug-and-play is not possible.
- Instrument cluster: Passat B6 clusters run on the 3C0 920 xxx part series, Superb B6 on 3T0 920 xxx. The display hardware and driver circuit boards are often identical, but the cluster stores the vehicle’s mileage and is coded to the specific VIN and equipment level. A Superb cluster will bolt into a Passat physically but will display the Superb’s mileage and may not communicate correctly on the K-line without recoding. Mileage matching requires professional equipment.
- Transmission control unit (TCU): Both cars offered the DSG DQ250 and DQ500 gearboxes. The TCU part numbers follow the same Bosch sequences — 02E 927 770 xxx — and do interchange between Passat and Superb on the same gearbox code. Adaptation learning must be reset after any TCU replacement regardless of origin car.
- Gateway / CAN gateway: The diagnostic gateway (part series 3C0 907 530 xxx) is shared at hardware level, but the gateway’s configuration file encodes which networks and which control units are expected on the bus. A gateway from a Passat with full options fitted into a lower-specification Superb will generate persistent fault codes. The gateway requires variant coding matched to the actual equipment fitted.
Where the Seat Exeo Diverges
The Exeo’s ABS module is an Audi A4 B7 derivative — Bosch 5.7 or 8.0 units, part series 8E0 614 xxx. These are not interchangeable with Passat B6 or Superb B6 ABS units and must not be attempted.
The Exeo’s engine management units follow Audi A4 B7 part numbering (8E0 or 8H0 prefix) for the older carry-over engines. Some of the later Exeo variants used updated VW Group ECU platforms closer to the Passat B6, but this must be confirmed against the actual part number on the unit — never assumed from the engine code alone.
Where the Exeo does share directly with the Passat B6 family is in supplier-agnostic components: the rain sensor, some window lift modules for front doors, and certain climate control panel assemblies on comparable equipment levels. In each case, confirm by matching the full part number including suffix letters.
Fault Codes Relevant to This Platform
When a module swap is done without correct coding, the following codes frequently appear across all three cars:
- U0100 — Lost communication with ECM/PCM. Common after a CAN gateway swap without variant coding.
- U0121 — Lost communication with ABS control unit. Seen after an ABS unit from a different variant level is fitted without coding.
- 01314 (VAG) — Engine control module: implausible signal. Often triggered when TCU adaptation data conflicts with replacement TCU.
- 00778 (VAG) — Steering angle sensor G85: implausible signal. Appears when the ESP basic setting has not been run after a steering angle sensor replacement.
- 01044 (VAG) — Control module incorrectly coded. The gateway’s self-diagnostic response when its configuration does not match detected network nodes.
OEM Part Numbers
The following numbers are representative of high-crossover units across this platform family. Always confirm against the label on the removed unit — suffix letters matter and variants are not always interchangeable without coding. A related diagnostic guide is VW Passat B6 Baterie Descărcată: Diagnosticul Modulului de Confort.
- 3C0 614 517 H — ABS/ESP hydraulic control unit, Passat B6 2.0 TDI, MK60EC1
- 3T0 614 517 C — ABS/ESP unit, Superb B6 equivalent, same hydraulic block
- 3C0 937 049 C — Comfort control module (BCM), Passat B6 standard equipment
- 3C0 907 530 AF — CAN data bus diagnostic interface / gateway, Passat B6
- 02E 927 770 AJ — DSG DQ250 transmission control unit, shared across Passat B6 and Superb B6 on matching gearbox codes
- 3C0 955 559 A — Rain and light sensor module, shared Passat B6 / Superb B6
What to Check Before Ordering a Used Unit
For any cross-platform purchase from this group: read the full part number off the unit currently fitted, not from an online catalogue. The catalogue may list a range of compatible numbers — the unit in the car may be at one end of that range and the used unit you are offered may be at the other, requiring different coding. The supplier should be able to confirm the exact number on the label. At GiantParts, tested OEM units are listed with the part number from the unit itself, not just the catalogue reference, which is the only way to know what you are actually getting.
Affected Vehicles
- VW Passat B6 (3C) — 2005–2010, all engine variants
- Skoda Superb B6 (3T) — 2008–2012 within this guide’s scope
- Seat Exeo (3R) — 2008–2012, with the strong caveat that drivetrain electronics follow Audi A4 B7 lineage, not Passat
- VW Passat CC (357) — 2008–2012 — shares most PQ46 body electronics with the Passat B6 and behaves identically for the modules listed here
FAQ
Can I fit a Skoda Superb B6 ABS module directly into a VW Passat B6?
In most cases yes, provided the ABS generation and hydraulic configuration match. The hardware is shared. After fitting, the unit must be coded to the receiving car using VCDS or similar, and the ESP sensor calibration must be run. Do not assume it will work without those steps — it will store faults even if the underlying hardware is identical.
Does the Seat Exeo use the same ABS unit as the Passat B6?
No. The Exeo’s ABS module follows the Audi A4 B7 part lineage, not the Passat PQ46 lineage. The hydraulic block and control unit are different families. Attempting to cross-fit them is not a supported interchange and should not be attempted based on part catalogues that may list the Exeo alongside Golf and Passat entries in error. For additional context, read Defecțiune Modul Confort Încuiere Centralizată VW Passat B6.
Will a Passat B6 instrument cluster work in a Superb B6?
Physically it will fit, and the wiring is compatible. But the cluster stores mileage internally and is coded to the car’s VIN and equipment level. It will not simply adopt the new car’s data. Mileage correction and recoding are required — this is not a plug-and-play swap and requires diagnostic equipment that can write to the cluster.
What coding does a replacement CAN gateway need on these cars?
The gateway needs its configuration byte set to match the equipment actually fitted to the car. This includes which control units are present on the CAN bus and which optional systems are installed. A gateway from a fully loaded Passat fitted into a base-specification Superb will throw communication faults for every module it expects but cannot find. Coding is done with VCDS under the gateway’s adaptation channels.
Are DSG transmission control units shared across Passat B6 and Superb B6?
Yes, where the gearbox code matches. Both cars used the DQ250 and DQ500 DSG units sourced from the same Bosch production. The TCU part numbers cross-reference between the two models on matching gearbox codes. After any TCU swap — including same-model swaps — the basic settings and adaptation learning must be reset, otherwise shift quality will be degraded and fault codes may appear.
Find tested OEM electronic parts and modules at:
https://giantparts.eu/
