A faulty transmission control module (TCM) most often causes limp mode with the gearbox stuck in one gear, harsh jolts when you select D or R, erratic gear changes, flashing PRND letters and a gearbox or engine warning light. However, the same symptoms are often caused by a low gearbox oil level, a weak battery, a poor earth or a faulty sensor. To test a transmission control module, start by checking the battery and reading the fault codes with a diagnostic tool that can talk to the gearbox control unit, then check the power supply, the connector, the oil and the live data. Below we explain the symptoms, the diagnostic steps and what the most common fault codes mean.
ABS control unit Nissan X Trail 478508H800
Vendors's code: 478508H800
Product code: 20FF-4240A
Barcode:
Code 39:
ISBN:
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Price 30 euros applies shipments to 5 kg on worldwide. Above this weight, please contact us by email to check price
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Is this the right control unit for your Nissan X Trail?
This is a used, working ABS control unit for the Nissan X Trail - number 478508H800. Before buying, compare the number with the label on the control unit in your car.
ABS control unit Nissan X Trail
For the Nissan X Trail (2003) we offer a used control unit that supervises the ABS; you can match it using the numbers in the list. It is working and in good condition.
Numbers to compare
- 478508H800 - part number
Application according to the listing
- Nissan X Trail - model
- 2003 - year
- 2.2 D - engine according to the listing
What the control unit does
The electronics of the unit consist of a processor, valve driver stages and sensor input circuits. Each of these can fail on its own, which gives different symptoms.
Fitment
Compare the number 478508H800 in full with the number on your control unit. Different versions were fitted to the same models, so the number decides, not the model and year alone.
Symptoms of a faulty control unit
- valve faults appear although the hydraulic unit is fine,
- the ABS works unevenly,
- the ABS light stays on after replacing a sensor,
- the unit stops responding after moisture or corrosion.
Before buying a control unit, check the fuse, power supply, ground and wheel speed sensors - a damaged harness or sensor causes similar symptoms.
Questions and answers
| What condition is the part in? |
|---|
| It is a used, working part in good condition, covered by a 6-month warranty. |
| Can a control unit with a different number fit too? |
| Sometimes, but we do not assume listings are interchangeable. Compare all numbers with the label on your unit or ask us. |
| Which number matters most? |
| Compare all numbers on the label, above all the one marked as manufacturer or OEM number. |
For questions about fitment, write to contact@auto24parts.com and give the number from the label.