How to match the 0281017983 / 4L0910409H ECU to your Audi Q7 4.2 TDI
The Bosch EDC17CP44 ECU numbered 0281017983 is one of the versions used in the Audi Q7 4L 4.2 TDI V8; its label carries Audi number 4L0910409H. We offer a single unit, tested before dispatch, which has to be programmed once installed. Warranty: 6 months.
Label markings
- Bosch number: 0281017983 (0 281 017 983)
- Audi number: 4L0910409H (4L0 910 409 H)
- ECU type: Bosch EDC17CP44
Master and slave in the Audi Q7 4.2 TDI
Number 4L0910409H is used for both the master and the slave ECU – the Q7 4.2 TDI has two of them. The master sits horizontally and is the one that usually floods: water from around the wipers runs under the scuttle panel and then along a sensor cable into the ECU. The vertically mounted slave rarely needs replacing.
Vehicle compatibility
Before ordering, compare both numbers – 0281017983 and 4L0910409H – with the sticker on the housing. Your model missing from the list rules nothing out, but a different number, e.g. 0281018825, means a different program. EDC16CP34 ECUs from other Q7 4.2 TDI cars (e.g. 0281013013) are a separate group.
Preparation and installation
This unit is not prepared as IMMO OFF: after fitting it has to be adapted to the car with ODIS, VAS or VCDS. The other route is cloning – send us the faulty ECU or its files and we will transfer the data to the new unit free of charge.
For EDC17CP44 ECUs from the Q7 4.2 TDI we do not offer an IMMO OFF set – you can choose programming or cloning, which is included in the price.
Symptoms of a failed ECU in the Q7 4.2 TDI
A failed ECU in the Q7 4.2 TDI usually shows sudden symptoms, for example:
- the car does not start
- rough engine running
- immobiliser fault codes
- the engine starts and stalls shortly after
Power supply, wiring or the battery can cause similar symptoms, so it is worth running a diagnosis before buying.
Other Audi Q7 4.2 TDI ECUs in stock
Full range: Audi engine ECUs · Bosch ECUs
Frequently asked questions about 0281017983 / 4L0910409H
How do I check that 0281017983 fits my Q7?
Compare Bosch number 0281017983 and Audi number 4L0910409H with the label on your old ECU. If both match, the ECU fits – even if your model year is not listed in the description.
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Is the 0281017983 ECU a master or a slave?
In the Q7 4.2 TDI the master and slave share the same number 4L0910409H. After programming or cloning the ECU takes over the role of the unit it replaces; the master, mounted horizontally, is the one replaced most often.
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How do I order cloning of the 4L0910409H ECU?
Send us the faulty ECU or its files. We will transfer the data to the 0281017983 ECU, and the service is included in the price.
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