• 2003-2010 VW Touareg (7L) VW Phaeton (3D) Porsche Cayenne Bentley Continental Audi A8 (D3) Kessy Repair Service 3D0909135 3D0909135K 3D0909135L 3D0909135M 3D0909135P 3D0909135R 3D0909137 3D0909137A 3D0909137B 3D0909137C 3D0909137E 3D0909137F 3D0909137G 7L0909135 7L0909137
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2003-2010 VW Touareg (7L) VW Phaeton (3D) Porsche Cayenne Bentley Continental Audi A8 (D3) Kessy Repair Service

2003-2010 VW Touareg (7L) VW Phaeton (3D) Porsche Cayenne Bentley Continental Audi A8 (D3) Kessy Repair Service

$250.00 USD
$250.00 USD
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VW Touareg Phaeton Porsche Cayenne Bentley Continental Audi A8 Kessy Module Mail-In Repair Service

Expert repair service for Kessy (Keyless Entry Start System) modules with keyless entry failures, battery drain, and communication issues.
Plug & Play solution with no dealer visit required.

6-Month Warranty Plug & Play No Programming Required

Service Overview

Service Type Complete Repair & Programming
Turnaround Time 2-4 Business Days
Warranty 6 Months / Unlimited Miles
Installation Plug & Play - No Coding Needed

Common Symptoms This Service Fixes

  • Keyless entry completely stops working - door handles won't lock or unlock the vehicle
  • Push-button start (KeylessGo) system not functioning
  • Remote key fob buttons still work normally, but keyless proximity functions fail
  • Battery drains within 1-3 days when vehicle is parked, with intermittent 2A current draw every 10-60 seconds
  • "Move selector to P" warning message appearing on dashboard
  • Loss of communication with multiple vehicle systems including ABS, transmission, HVAC, and level control
  • Multiple simultaneous antenna "open circuit" faults (4-7 antennas) are symptomatic of internal Kessy module failure rather than actual antenna problems

Common Fault Codes Related to Kessy Module Failure

These are typical diagnostic trouble codes (DTCs) that indicate Kessy module issues:

Fault Code Description
00003 Control Module 012 - Electrical Fault in Circuit
Indicates an electrical fault within the Kessy control module circuitry
00179 Access/Start Authorization Antenna; Driver's Side (R134) - 011 Open Circuit
Driver's side door handle antenna communication failure
00180 Access/Start Authorization Antenna; Passenger Side (R135) - 011 Open Circuit
Passenger side door handle antenna communication failure
00181 Access/Start Authorization Antenna (in Rear Bumper) (R136) - 011 Open Circuit
Rear bumper antenna communication failure
00182 Luggage Compartment Access/Start Authorization Antenna (R137) - 011 Open Circuit
Trunk/tailgate antenna communication failure
00183 Interior Access/Start Authorization Antenna 1 (R138) - 011 Open Circuit
Interior cabin antenna communication failure

Important Note: When multiple antenna "open circuit" faults appear simultaneously (typically 4-7 antennas), this is almost always indicative of an internal Kessy module failure rather than individual antenna problems. The module's internal circuit board issues prevent it from communicating with the antennas, creating false open circuit codes. Replacing individual antennas will not resolve this issue - the Kessy module itself requires repair.

What's Included

  • Circuit-Level Repair - Component replacement with upgraded OEM-grade parts
  • Factory Programming - VIN-specific coding using genuine manufacturer protocols
  • Bench Testing - Rigorous testing on Vehicle Network Diagnostics and Driver Cycle Replicators
  • Quality Assurance - Final validation before shipping

Vehicle Compatibility

VW Touareg (7L) 2003-2010
VW Phaeton (3D) 2003-2016
Porsche Cayenne 2003-2010
Bentley Continental 2003-2010
Audi A8 (D3) 2003-2010

Supported Part Numbers:

3D0909135 3D0909135K 3D0909135L 3D0909135M 3D0909135P 3D0909135R 3D0909137 3D0909137A 3D0909137B 3D0909137C 3D0909137E 3D0909137F 3D0909137G 7L0909135 7L0909137
3D0-909-135-MU-009

If you can't find your specific part number, reach out to us for assistance!

Our Repair Process

1

Submit Your Work Order

Fill out the work order form on our website. Our skilled technicians will review your details, confirm the diagnosis using fault codes and provided information, and email you instructions to ship your module with your work order number.

2

Repair

Once we receive your module, we repair your original unit and include any necessary reprogramming at no extra cost.

3

Quality Testing & Return

We rigorously test the repaired module to ensure it performs flawlessly, then ship it back to you promptly.

4

Install & Drive

Install the repaired module in your vehicle and enjoy reliable keyless entry and start functionality on the road.

What You Need to Provide

  • Vehicle VIN Number - Required for accurate programming
  • Year, Make & Model - Complete vehicle information
  • Detailed Symptom Description - What issues are you experiencing?
  • Fault/Error Codes - OBD-II diagnostic codes (if available)
  • Module Photos - Clear pictures of your module showing part numbers
  • Contact Information - Phone and email for updates
⚠️ Important Notice

We do NOT service water damaged units.

Please note: If your Kessy module tests ok, you will pay a $195 bench testing fee plus return shipping. It is your responsibility to make the correct diagnosis. We only provide the service.

Why Choose ECU Maverick?

Expert Technicians Specialists with decades of combined experience
OEM Components Upgraded parts that meet or exceed manufacturer specifications
Factory Equipment Genuine manufacturer programming tools and protocols
Cost Savings Save 50-70% compared to dealer replacement
Fast Turnaround Most repairs completed within 2-4 days
Plug & Play No dealer visit or additional programming required
Industry-Leading Warranty

6 Months / Unlimited Mileage

We stand behind every repair with comprehensive warranty coverage that exceeds OEM standards. If any issues arise within 6 months, we'll make it right - no questions asked, no mileage restrictions.

What's Covered: All repairs, programming, and components installed during service.

Get Started Now! Submit Your Work Order to Kick Off Your Kessy Module Repair with ECU Maverick!

Our team needs to verify compatibility, assess your specific symptoms, and provide an accurate quote. Orders placed without prior approval may be canceled and refunded.

Not Repairable? If your module cannot be repaired, we'll inform you immediately and offer programming service for one of our remanufactured units with the same warranty.

Additional Information

Shipping Instructions

  • Pack module securely in bubble wrap or foam padding
  • Use a sturdy box to prevent damage during transit
  • Include a printed copy of your order confirmation
  • Include a note with your contact information and symptoms
  • Ship via USPS, FedEx, or UPS with tracking

Why Repair vs. Replace?

  • Cost Effective - Save thousands compared to dealer prices
  • Environmentally Friendly - Reduce electronic waste
  • Upgraded Components - Better than original with improved reliability
  • No Dealer Visit - Avoid expensive diagnostic and programming fees
  • Same-Day VIN Coding - Preserves Factory Settings: Your Kessy module retains all factory coding, flash, and configuration files, ensuring seamless integration with your vehicle's systems
  • Risk-Free - 6-month warranty coverage
View full details

Getting Started

Start a request

Open a request in MavConnect, our customer portal, and tell us the vehicle, the module and what it's doing. A technician reviews it and sends your Technical Review — the price and the shipping instructions — in writing. Accept it, ship the module with any carrier (USPS, FedEx or UPS), and write your request number on the box.

WHAT'S COVERED

A technician looks first

Every request starts with a $195 Technical Review: a technician checks your part number, codes and photos against this service and confirms it's the right call before you ship anything. Go ahead with it and the $195 comes off your price. Want the module measured on the bench before we work on it? Add bench evaluation when you submit — $195 per hour, and you'll know the hours before we start.

WHAT TO EXPECT

Turnaround & warranty

✓ Turnaround: stated in your Technical Review and counted from the day your module reaches our bench.  

✓ Warranty: six months on rebuilds and programmed replacements, when installed by a licensed shop.

✓ Programming: your module comes back with its own programming — plug in and drive. Programmed to your VIN — plug in and drive"

About ECU Maverick — ECU Repair, Rebuilding & Programming Specialists

ECU Maverick rebuilds, programs and clones control modules for European, domestic and specialty vehicles. Based in Fort Myers, Florida, we work with independent shops, dealerships and vehicle owners nationwide — by mail.

Where most shops replace and reprogram, we work at the board level: our technicians rebuild the circuits that fail, bringing back modules others write off. That comes from years of reverse engineering and bench work across thousands of control units.

Vehicles We Service

We specialize in European automotive electronics — BMW, Mercedes-Benz, Audi, Porsche, Land Rover, Bentley, Ferrari, Lamborghini, Maserati and Aston Martin — and also service domestic vehicles, heavy-equipment control modules and marine electronics.

Why Shops and Owners Choose Us

Price in writing first — Your Technical Review gives you the exact price before you ship. No surprises, and the $195 comes off your price when you go ahead.

Plug-and-play ready — Rebuilt modules keep their programming; replacements are programmed to your VIN. No dealer visit.

A technician, in writing — Every answer comes from the technician who has your file, on your request in MavConnect. You can read it twice, share it with your shop, and come back to it a year later.

Six-month warranty — On rebuilds and programmed replacements, when installed by a licensed shop. Full terms on your request.

Our Commitment

We exist to keep your vehicle out of the dealership and back on the road — a technician's honest answer, a price in writing, and the same care we'd give our own car, from the first message to the day the module is back in your hands.