How to access the clutch master cylinder by removing the Engine Control Module and electronics box on Audi A4?

The Power/rain Control Module (PCM), located within a waterproof box at the left end of the cowl area, requires reprogramming with a proprietary scan tool and cannot be replaced at home. In many models, the PCM is housed in a special metal anti-theft box, making removal extremely challenging. This procedure focuses on accessing the clutch master cylinder by removing the PCM and electronics box. Begin by disconnecting the cable from the negative battery terminal, then remove the cowl cover. Next, take off the cover from the electronics box and pry off the retaining strap from the PCM, moving it aside. Some models feature an anti-theft housing secured with shear-head bolts that need to be heated with a heat gun before being unscrewed with locking pliers, ensuring heat is only applied to the bolts not threaded into the PCM. Unplug the electrical connectors near the firewall, pull back the release tabs to detach the relay carrier from the electronics box, dislodge the grommet, and pull the wiring harness through the opening. Finally, unscrew the fasteners to remove the electronics box from the cowl area, and installation follows the reverse order of removal.

Genuine Audi A4 Engine Control Module

Engine Control Computer

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40 Engine Control Modules found

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Audi A4 ECM Part Number: 8E1-910-115-HX
$661.68 MSRP: $850.00
You Save: $188.32 (23%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Control Unit
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2009 Audi A4 | Cabriolet | 4 Cyl 2.0 L GAS
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Audi A4 ECM Part Number: 8K2-907-115-N
$956.76 MSRP: $1236.92
You Save: $280.16 (23%)
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Product Specifications
- Other Name: Control Unit
- Replaces: 8K2-997-115-AX, 8K2-907-115-D, 8K2-907-115-M
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2009 Audi A4 | Base | 4 Cyl 2.0 L GAS
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Audi A4 ECM Part Number: 8E0-909-518-AF
$976.99 MSRP: $1263.08
You Save: $286.09 (23%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Control Unit
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2003 Audi A4 | Base, Cabriolet | 4 Cyl 1.8 L GAS
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Audi A4 ECM Part Number: 8W0-906-259-AB
$1651.11 MSRP: $1982.13
You Save: $331.02 (17%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Control Unit; ECM
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2019-2020 Audi A4 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
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Audi A4 ECM Part Number: 8E0-909-528-PX
$586.47 MSRP: $753.86
You Save: $167.39 (23%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Control Unit
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2005-2006 Audi A4 | Base, Cabriolet | 4 Cyl 1.8 L GAS
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Audi A4 ECM Part Number: 8E1-910-115-X
$1171.32 MSRP: $1507.52
You Save: $336.20 (23%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Control Unit
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2007-2008 Audi A4 | Base, Cabriolet | 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
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Audi A4 ECM Part Number: 4D0-997-551-EX
$1180.10 MSRP: $1516.15
You Save: $336.05 (23%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Control Unit
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 1998-2001 Audi A4 | Avant, Base | 6 Cyl 2.8 L GAS
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Audi A4 ECM Part Number: 8E0-909-518-F
$1357.79 MSRP: $1630.00
You Save: $272.21 (17%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Control Unit
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2002-2003 Audi A4 | Base | 4 Cyl 1.8 L GAS
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Audi A4 ECM Part Number: 8E0-909-518-G
$1357.79 MSRP: $1630.00
You Save: $272.21 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2002-2004 Audi A4 | Base | 4 Cyl 1.8 L GAS, 6 Cyl 3.0 L GAS
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Audi A4 ECM Part Number: 8D0-997-559-BX
$1284.40 MSRP: $1536.23
You Save: $251.83 (17%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Control Unit
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 1997-2001 Audi A4 | Base | 4 Cyl 1.8 L GAS
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Audi A4 ECM Part Number: 8E0-909-559-RX
$1245.23 MSRP: $1488.57
You Save: $243.34 (17%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Control Unit
- Replaces: 8E0-909-559-DX, 8E0-909-559-EX, 8E0-909-559-D
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2005, 2002-2003 Audi A4 | Base, Cabriolet | 6 Cyl 3.0 L GAS
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Audi A4 ECM Part Number: 8D0-907-551-AA
$1498.21 MSRP: $1798.57
You Save: $300.36 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit
- Replaces: 8D0-907-551-L
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2000-2001 Audi A4 | Base | 6 Cyl 2.8 L GAS
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Audi A4 ECM Part Number: 8W0-907-115-C-8W0
$1723.12 MSRP: $2068.57
You Save: $345.45 (17%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Control Unit; ECM
- Replaces: 8W0-907-115-C
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2017-2018 Audi A4 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
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Audi A4 ECM Part Number: 8E0-909-559-LX
$1266.65 MSRP: $1514.28
You Save: $247.63 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2004 Audi A4 | Base, Cabriolet | 6 Cyl 3.0 L GAS
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Audi A4 ECM Part Number: 8W0-907-115-S
$1651.11 MSRP: $1982.13
You Save: $331.02 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit; ECM
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2019-2020 Audi A4 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
View related parts
Audi A4 ECM Part Number: 8E0-909-528-GX
$1450.40 MSRP: $1737.14
You Save: $286.74 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2004 Audi A4 | Base, Cabriolet | 4 Cyl 1.8 L GAS
View related parts
Audi A4 ECM Part Number: 8E1-909-559-BX
$1376.13 MSRP: $1645.71
You Save: $269.58 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2005 Audi A4 | Base, Cabriolet | 6 Cyl 3.0 L GAS
View related parts
Audi A4 ECM Part Number: 8K2-907-115-AA
$1121.81 MSRP: $1450.31
You Save: $328.50 (23%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2010 Audi A4 | Base | 4 Cyl 2.0 L GAS
View related parts
Audi A4 ECM Part Number: 8K2-907-115-AG
$1917.09 MSRP: $2301.42
You Save: $384.33 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit
- Replaces: 8K2-907-115-AD
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2011-2012 Audi A4 | Base | 4 Cyl 2.0 L GAS
View related parts
Audi A4 ECM Part Number: 8K5-907-115-C
$1879.71 MSRP: $2256.55
You Save: $376.84 (17%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2013 Audi A4 | Base | 4 Cyl 2.0 L GAS

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Audi A4 Engine Control Module

Choose original equipment manufacturer Engine Control Module for great performance and strong durability. They use Audi's official craftsmanship and high-grade materials, and meet strict quality standards. Are you looking for quality Engine Control Module at a good price? Come to our online store. We carry a wide range of genuine parts for your Audi A4 and the prices are competitive. Each part comes with the manufacturer's warranty. You can install with confidence and get steady results. Over time, you'll save money and avoid hassle. Keep your maintenance simple and protect your vehicle with OEM parts. Get the quality your A4 needs now.

Audi A4 Engine Control Module Parts and Q&A

ECM
8E0-909-518-AF
Q: How to access the clutch master cylinder by removing the Engine Control Module and electronics box on Audi A4?
A:
The Power/rain Control Module (PCM), located within a waterproof box at the left end of the cowl area, requires reprogramming with a proprietary scan tool and cannot be replaced at home. In many models, the PCM is housed in a special metal anti-theft box, making removal extremely challenging. This procedure focuses on accessing the clutch master cylinder by removing the PCM and electronics box. Begin by disconnecting the cable from the negative battery terminal, then remove the cowl cover. Next, take off the cover from the electronics box and pry off the retaining strap from the PCM, moving it aside. Some models feature an anti-theft housing secured with shear-head bolts that need to be heated with a heat gun before being unscrewed with locking pliers, ensuring heat is only applied to the bolts not threaded into the PCM. Unplug the electrical connectors near the firewall, pull back the release tabs to detach the relay carrier from the electronics box, dislodge the grommet, and pull the wiring harness through the opening. Finally, unscrew the fasteners to remove the electronics box from the cowl area, and installation follows the reverse order of removal.