How to match the 0281016835 / 4L1910401L ECU to your Audi Q7 3.0 TDI
Does your Q7 have an ECU numbered 4L1910401L? The matching unit is this Bosch 0281016835 (EDC17CP44) from an Audi Q7 4L 3.0 TDI, prepared as IMMO OFF Plug & Play and checked in our test car. Before you buy, read how the immobiliser behaves on EDC17. Warranty: 6 months.
Label markings
- Bosch number: 0281016835 (0 281 016 835)
- Audi number: 4L1910401L (4L1 910 401 L)
- ECU type: Bosch EDC17CP44
Vehicle compatibility
This unit fits an Audi Q7 4L 3.0 TDI that left the factory with ECU 0281016835 / 4L1910401L. Before ordering, compare both numbers with the sticker on the housing – your model missing from the list rules nothing out, but a different number, e.g. 0281016834, means different software. EDC16CP34 units from earlier Q7s (e.g. 0281013691) are a separate group.
Preparation and installation
The 0281016835 unit is prepared as IMMO OFF and the engine starts without programming. On EDC17, however, an immobiliser fault remains stored and cannot be cleared. In a Q7 with the large-display instrument cluster the message SAFE appears; with the smaller display there is no message. If you want the car to run without this fault, have a workshop carry out an immobiliser adaptation or order data cloning from your old ECU (included in the price). Paid options: DPF OFF, EGR OFF, FLAPS OFF, chip tuning.
Symptoms of a failed ECU in the Q7
A typical cause of failure in the Q7 is water from the scuttle area where the ECU is mounted. Signs of damage include:
- the engine cranks but does not start
- the engine stalls when warm or after contact with moisture
- corrosion on the pins or the circuit board
These symptoms can also have another source (power supply, wiring, battery) – start with diagnostics. Details in the article: water-damaged EDC17 ECU in the Audi Q7 3.0 TDI.
Other Audi Q7 3.0 TDI ECUs in stock
Full range: Audi engine ECUs · Bosch ECUs
Frequently asked questions about the 0281016835 / 4L1910401L ECU
Will the 0281016835 fit a Q7 with an EDC16CP34 ECU?
No. This is a Bosch EDC17CP44. Q7 3.0 TDI models with EDC16CP34 (e.g. 0281013691) use different ECUs – choose by the number on the label.
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Does the 0281016835 need programming?
No – the IMMO OFF version starts the engine without programming; only the immobiliser fault described above remains.
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What extra options can I order with the 0281016835?
Paid options: DPF OFF, EGR OFF, FLAPS OFF and chip tuning.
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