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 pump and control module Jeep 04779976AI
Vendors's code: 04779976AI
Product code: ABS_ 04779976AI
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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The zero at the start of 04779976AI - does it matter?
Yes, the full number counts. This is a used, working, original ABS unit for a Jeep. We do not state the model.
ABS pump and control module for a Jeep - number 04779976AI
Customers ask whether the zero at the start of the number matters. It does. The part number (OEM) of this unit is 04779976AI, with the zero and the letters AI. Compare it in full. We do not state the model; selection is by part number. This Jeep part is used, working and original.
The number in full
- 04779976AI - part number (OEM): 04779976AI
Check in order: the zero, seven digits and the two letters at the end. The letter I and the digit 1 are easily confused. If in doubt, look closely at the shape of the character. We do not assign a role to this number.
Symptoms that start the search
Drivers most often report:
- an ABS warning light that comes on in freezing weather,
- ABS not working after the car has stood for a long time,
- a pump relay or motor fault,
- loss of communication at low voltage.
Faults in freezing weather and after standing are often linked to the battery. Measure the voltage and check the earth. Have the faults read at a garage. If the problem persists, compare the number. After fitting, bleed the brakes.
Short answers
| Is a number without the zero the same part? |
|---|
| We do not take that for granted. Write to us with the full number. |
| What does the AI suffix mean? |
| It is part of the number in this listing. Compare it with your label. |
| Which Jeep model? |
| We do not state the model. Number 04779976AI decides. |
| How can I be sure before buying? |
| Send us a photo or a written copy of the number. We will compare it. |
Write to us with the number from your unit. We will confirm whether it is written the same way.