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.
Throttle Body Smart ForFour Denso MN149259 A1341400004
Vendors's code: A1341400004
Product code: MN149259
Barcode:
Code 39:
ISBN:
€284.55
Price
€284.55
€350.00
Price
€350.00
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Throttle Body Smart ForFour Denso MN149259 A1341400004
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Throttle body MN149259 Denso – is it the right part for your car?
This is a used, working Denso throttle body with part numbers MN149259 and A1341400004, for: Smart For, Four, 2004–2006. To confirm the fit, compare the number with the label on the throttle body in your car.
Throttle Body Denso MN149259 A1341400004 – Smart For, Four
The Denso MN149259 throttle body controls the air flow in the engine intake system. In electronic versions, the throttle plate position is controlled by the engine control unit. According to the product data, it fits: Smart For, Four; production years: 2004–2006.
Part numbers to compare
- MN149259
- A1341400004
The label on the throttle body fitted to your car should show the number MN149259 or A1341400004. The model name alone (Smart For, Four) is not enough – throttle bodies with other numbers were also fitted to these cars.
Common throttle body faults
Typical symptoms of throttle body problems in Smart cars:
- carbon deposits – rough idle, engine stalling,
- worn throttle position sensor – jerking, fluctuating revs, fault code stored in the engine control unit,
- in electronic throttle bodies: failed motor or gear drive – limp mode, loss of power, engine warning light.
If cleaning does not help and diagnostics point to a throttle body or position sensor fault, replacement with a part carrying the same number is usually required. After fitting, many cars need an adaptation according to the vehicle manufacturer's procedure.
Questions and answers
| How do I check that the MN149259 throttle body fits my car? |
|---|
| Compare the number MN149259 or A1341400004 with the label of the throttle body fitted to your car (Smart For, Four). |
| Which production years does the MN149259 throttle body come from? |
| According to the product data, it was for: Smart For, Four from 2004–2006. |
| Does the throttle body need to be adapted (relearned) after replacement? |
| In many cars, yes – the engine control unit has to learn the positions of the new throttle body. This is done with a diagnostic tool or according to the vehicle manufacturer's procedure. |
| What condition is this throttle body in? |
| It is a used part in good working condition. The warranty period is shown in the product specification table. |
Need help choosing a part for your Smart? Send us the number from your throttle body's label and we will confirm whether this part will fit.
