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CONTROL MODULE SEAT SIEMENS 5WK4791, 5WK4 791, 1L0959800, 1L0 959 800 - C27, C28, C391
  • Part Type CONTROL MODULE
  • Vehicle Make and Model SEAT
  • Manufacturer SIEMENS 5WK4791, 5WK4 791
  • Part Number 1L0959800, 1L0 959 800
  • Warranty 6-month warranty
  • Condition USED IN GOOD CONDITION
  • Testing & Inspection Device thoroughly inspected and tested by a certified technician
Siemens
with VAT without VAT
Price €50.00
PLN GBP EUR USD
Availability:
product-availability-module In stock
pcs.

Fast Delivery

DHL Express - 30 euro

6 Month Warranty

Returns Possible up to 14 days

Secure payments

Stripe - Paypal - Credit Card
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Shipping from €30.00 - shipping (Poland)

Price 30 euros applies shipments to 5 kg on worldwide. Above this weight, please contact us by email to check price

PRODUCT DETAILS

  • Part Type CONTROL MODULE
  • Vehicle Make and Model SEAT
  • Manufacturer SIEMENS 5WK4791, 5WK4 791
  • Part Number 1L0959800, 1L0 959 800
  • Warranty 6-month warranty
  • Condition USED IN GOOD CONDITION
  • Testing & Inspection Device thoroughly inspected and tested by a certified technician

SEAT

SIEMENS 5WK4 791

 1L0959800

 1L0 959 800

Go to full description

Blog

  • 08-08-2026

    How to Check the Operation of a Transmission Control Module - Symptoms

    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.

    Read more
    FAQ
    1. How can I choose the correct product for my vehicle?
    Compatibility should always be verified using the part number shown on the module label. If you are unsure, you can send us a photo of your original unit for verification — our technical support team will respond as quickly as possible.
    2. What is the shipping time and warranty?
    We offer express shipping across Europe and worldwide using DHL, UPS, or FedEx. All products come with a 6-month warranty.
    3. Is the product tested before shipping?
    Yes, all modules are fully tested for communication and proper operation before shipping. Products are secured with warranty seals.
    4. How can I pay for the product?
    We offer multiple online payment methods including Stripe, PayPal, Google Pay, Apple Pay, Visa, Mastercard, and other local payment options available depending on your country.