News

If your 2010–2015 Audi TTS Quattro throws a fan control code, runs past 108°C in stop-and-go traffic, or loses A/C at idle, the cooling fan assembly is the first suspect. This guide covers the replacement part, the codes it clears, and the OEM cross-references.

The A/C Radiator Cooling Fan Assembly for 2010–2015 Audi TTS Quattro is a direct-fit replacement for the Mk2 (8J) platform. It integrates the primary radiator cooling fan and the A/C condenser fan into one shroud unit — the configuration Audi specifies for the 2.0 TFSI (EA113/CDL) turbocharged engine.

What This Assembly Replaces

Five OEM part numbers cross-reference to it: 1K0959455ET, 1K0959455CR, 1K0959455DH, 1K0959455Q, and 3C0959455G. The ETKA supersession chain runs 1K0959455Q → 1K0959455CR → 1K0959455DH → 1K0959455ET → 3C0959455G, covering every Mk2 TTS (8J) model year from 2010 to 2015.

The same chain covers select VW Golf R Mk6 (2012–2013) applications that share the EA113 2.0 TFSI platform. Match your VIN against the fitment row in the table below before ordering.

Key Specifications

Motor and Materials: What Changed From 2010

Shroud and Housing

The shroud is molded from PA66-GF30, a 30% glass-fiber-reinforced polyamide 66 that holds its dimensions under sustained 120°C load. It is the de facto material across Ford, GM, and Toyota cooling modules for 2026, and the assembly is rated for under-hood durability in ambient conditions exceeding 105°C.

The motor housing is ADC12 aluminum with electroless nickel plating per ISO 4527, providing galvanic corrosion resistance in road-salt environments — a 2026 OEM service part homologation requirement across Ford and GM supply chains.

Brushless Motor

The motor swaps brushed-DC for a brushless electronically commutated (EC) design. Current draw drops about 22% versus the original 2010-spec motor while keeping the 400W peak rating the TTS's front-mounted intercooler and A/C condenser stack requires. Combined peak airflow measures about 2,450 CFM at 12.8V.

PWM Control and 2026 Diagnostics

The assembly keeps full compatibility with the 8J's existing PWM protocol — a 100Hz duty-cycle modulated signal, 10–90% duty, sent from the Engine Control Module through the fan control module. No CAN-bus reconfiguration is required.

The updated controller also produces cleaner back-EMF signatures that 2026-generation scan tools read through Mode $06 (On-Board Monitoring Test Results), letting you verify the fan hits commanded speed within ±3% tolerance — a check the original 2010–2015 controller architecture never offered.

DTC Mapping: Codes This Assembly Resolves

Directly addressed: P0480 (Fan 1 Control Circuit Malfunction), P0481 (Fan 2 Control Circuit), and P0691 (Fan 1 Control Circuit Low). The relevant SAE J2012 ranges:

• P0480–P0483 — fan control circuits: P0480 Fan 1, P0481 Fan 2, P0482 Fan 3, P0483 Fan Rationality Check.
• P0691–P0694 — fan control circuit low/high: P0691 Fan 1 Low, P0692 Fan 1 High, P0693 Fan 2 Low, P0694 Fan 2 High.
• P0526–P0528 — fan speed sensor circuit: applicable to 2026 CAN-bus monitored applications.

On 2012–2015 model years, intermittent fan operation and A/C loss at idle are documented failure modes. The updated motor controller IC adds enhanced flyback diode protection, targeting the premature control module burnout documented in Audi TSB 19-15-03.

Five Symptoms of a Failing Fan Assembly

Watch for these on the 2010–2015 TTS:

1. A/C performance drops at idle but recovers at highway speeds.
2. Coolant temperature climbs past 108°C in stop-and-go traffic.
3. Audible bearing noise — whine or grinding — during low-speed PWM operation.
4. Both fans fail together, pointing to the control module rather than a single motor.
5. The radiator fan runs at maximum speed regardless of temperature — PWM signal loss triggering fail-safe mode.

Troubleshooting Codes That Persist

P0480 That Returns After Replacement

On 2012–2015 models the usual culprit is corrosion at the 4-pin fan connector behind the front bumper, near the driver-side intercooler. Before condemning a new replacement fan assembly, verify:

1. Connector pin resistance: Pin 1 (Ground) to chassis < 0.3Ω.
2. PWM signal at Pin 2: a 100Hz square wave, checked with an oscilloscope or a 2026-compatible scan tool in actuation mode.
3. Fan control module 40A fuse integrity: fuse panel C, position 8 on LHD vehicles.

P0481 on 2014–2015 Models

Late-production 8J cars often trace P0481 to the auxiliary A/C fan's integrated thermal fuse. OE fuses were rated 135°C — marginally above the peak under-hood temperature the TTS reaches during sustained high-boost running.

This assembly upgrades to a 155°C-rated thermal fuse with conformal-coated motor windings, which eliminates the A/C fan dropout that triggers P0481 during extended idle in ambient temperatures above 38°C.

2026 Verification and Service Life

The shroud conforms to SAE J1639 (2026) for under-hood thermoplastics, and thermal endurance is validated to SAE J2980 Cycle B (2026 revision): 1,500 thermal shock cycles from -40°C to +120°C with under 2% dimensional drift. Lifecycle testing projects a 2026–2030 service window under normal operating conditions.

The dual-fan, PWM-ready design also supports the tiered cooling strategies being adopted across 2026 hybrid platforms. For installation, follow the Audi factory service manual Section 19 – Cooling System, Subsection 19.4 – Radiator Fan Assembly, Removing and Installing, for the 8J platform.

While the Front End Is Apart

Fan replacement means bumper work on the 8J, so it is a sensible window to check suspension wear on the same chassis. If your MkII TT/TTS/TTRS Quattro (FWD) is due, Koeep carries a 4-piece front and rear air suspension shock strut set for Audi TT, TTS, and TTRS MkII Quattro.

For rear axle work on 2007–2015 TT MkII, TTS, and TTRS Quattro cars with magnetic ride, there is a matching pair of rear magnetic-ride shock absorbers.

Order the Assembly or Get Help

Fitment Help and Related Parts

Not sure the assembly matches your build? Send your VIN through the request-for-quote page, email support@koeep.com, or message the team on WhatsApp.

For fans, radiators, and thermostats across makes, browse the full Engine Cooling Parts catalog. If you also maintain a mower, the John Deere Scotts LT160/LT180/S1642/S1742 spindle assembly guide (AM126225) walks through that rebuild.

Frequently Asked Questions