ABS Module Lab

Mercedes-Benz · 2001-2007

Mercedes-Benz C-Class (W203) C230/C240/C320/C350 ABS module repair

Mail in your Mercedes-Benz C-Class (W203) C230/C240/C320/C350 ABS module with our prepaid label. It comes back repaired and still coded to your VIN — or, if it is past repair, as a refurbished unit with your data cloned on, or with your repair price refunded minus shipping.

  • Unit: see below
  • Stability control: yes
  • 5 sourced part numbers
  • 3 fault codes

Known failure

Loss of communication with the W203 ESP module and stored codes P2068, P20CC and P2036 (no or incorrect message from N47-5 ESP control unit). Mercedes Medic notes the brake light switch is 'the most common problem' behind BAS/ESP/ABS lights on cars like the C240 - rule it out first.

The ABS module in the Mercedes-Benz C-Class (W203) C230/C240/C320/C350

The 2001-2007 Mercedes-Benz C-Class (W203) C230/C240/C320/C350 uses this ABS unit: Separate ESP control module + ABS/ESP pump (supplier not stated). The same unit covers the C-Class (W203) C230/C240/C320/C350 and CLK (W209). It is an ABS unit with stability control, so the module also handles traction and stability functions.

Its ABS module appears under 5 part numbers, starting with 203-545-17-32-80. Different numbers usually separate model years, drivetrains and option packages — match the number on your own module label rather than the year alone. What comes out depends on the unit. Send us a photo of it before you pull anything and we confirm what to ship.

Mercedes-Benz C-Class (W203) C230/C240/C320/C350 ABS module part numbers

Match the number printed on your module's label. Each number links to the page it was found on.

  • 203-545-17-32-80

  • 203-545-56-32

  • 209-545-31-32

    209 = CLK prefix)

  • A0034319412

  • A2034310812

Reading the label · Mercedes-Benz

Optional 'A' + 3 + 3 + 2 + 2 digits, optionally + 2-digit variant code (-80, -64). Control units often '... 545 xx 32', hydraulic/SBC units '... 431 xx 12', newer ESP units '172 900 52 14'. SBC labels also carry a Bosch 0265 960 0xx number.

e.g. A0054310512 · 203-545-17-32-80 · A 218-431-09-12

ABS fault codes on the Mercedes-Benz C-Class (W203) C230/C240/C320/C350

  • P2036

    No or incorrect message from control unit N47-5 (ESP control unit) - logged in other modules when the ESP unit fails

  • P2068

    Electronic transmission ECU N15

  • P20CC

    Rough road detection

Our promise

Can’t be repaired? You don’t pay for a repair.

If the bench finds your module past repair, we stop and tell you before doing anything else. Then you choose:

  1. 1A replacement — a refurbished unit of the same family with your VIN, coding and configuration cloned onto it, from $950. You pay only the difference from what you already paid, and we confirm the amount with you first.
  2. 2Your module back — with the repair price refunded, minus shipping costs.

Either way, nothing that changes your price happens without your OK.

Refund stages in our terms →

Mercedes-Benz C-Class (W203) C230/C240/C320/C350 ABS module questions

Which ABS module is in the Mercedes-Benz C-Class (W203) C230/C240/C320/C350?

It uses this unit: Separate ESP control module + ABS/ESP pump (supplier not stated). The exact unit is confirmed from your module label on arrival.

How much does ABS module repair cost for a Mercedes-Benz C-Class (W203) C230/C240/C320/C350?

Repair of your own module starts at $499; a replacement unit with your data cloned starts at $950. Return shipping starts at $29.95 and the label to us is prepaid.

My Mercedes-Benz C-Class (W203) C230/C240/C320/C350 module number is not listed. Can you still repair it?

The 5 numbers above are the ones we could source, not every one that exists. Send us a photo of the label first, or order the repair and we confirm the unit before any work.

Mercedes-Benz C-Class (W203) C230/C240/C320/C350 ABS light on? Fix the module you already own — from $499.

Look up your part number and order online — we email you a prepaid label to our lab. Or send us a photo of the label and your VIN first, and we'll tell you what you have and what it costs.

Back with your VIN and coding · can’t be repaired? repair price back, minus shipping · 1-year warranty · rush 2–3 days +$100

Call (817) 505-4201 · 📱 Text us a photo of the module label · Ask first — send a label photo · Email repairs@absmodulelab.com

Repair From $499

Start My Repair