Heated Seats retrofit 2004 CLK320 W209 with Memory Seat
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2004 CLK320 A209
Heated Seats retrofit 2004 CLK320 W209 with Memory Seat
I am new to this forum and want to add heated seats to my 2004 CLK320 Convertible with memory seats. I would like to retain the OEM look and functionality.
From searching this forum, it looks like I will need the following supplies.
Any suggestions for sourcing parts for the wiring harnesses? Part numbers listed above are NLA.
Is there a better (easier OR more cost effective) way to do this and be able to use the OEM switches?
I will be replacing the leather on my drivers side seat bottom as it is showing it's age and hope to add the heated seat option at the same time.
I will be happy to document my progress and look forward to working with the community to complete this upgrade.
From searching this forum, it looks like I will need the following supplies.
- Dash control switch with part number A2038216879 (includes the switches for the heated seats). - Already purchased on Ebay
- Left (Drivers Side) wiring harness A2094405206 for adding heated seat with memory seat option
- Right (Passenger Side) wiring harness A2094405406 for adding heated seat with memory seat option
Any suggestions for sourcing parts for the wiring harnesses? Part numbers listed above are NLA.
Is there a better (easier OR more cost effective) way to do this and be able to use the OEM switches?
I will be replacing the leather on my drivers side seat bottom as it is showing it's age and hope to add the heated seat option at the same time.
I will be happy to document my progress and look forward to working with the community to complete this upgrade.
Thread Starter
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Joined: Sep 2025
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2004 CLK320 A209
Still trying to determine what is needed. Now I believe my part numbers for the heated seat wiring harness were not correct. I believe I can use either of the following:
- A2035407134 or A2035403005
Junior Member
Joined: Nov 2015
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From: London, UK
C63 AMG W204 / CLA45 C117 AMG / ML500 W164 / CLK320 W209
Not sure if this may be much help but the switch panel on the dash upper control panel, Has a loom specific to the heated seats. Its quite a thick one and plugs into the Upper control panel seperately. Unsure of where that loom leads to but you wil certainly need this
Thread Starter
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2004 CLK320 A209
I believe the part numbers I listed are for the wiring loom.
Thanks in advance...
- A2035407134 or A2035403005
Thanks in advance...
Thread Starter
Newbie
Joined: Sep 2025
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2004 CLK320 A209
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Last edited by HorseCountryMB; Feb 26, 2026 at 12:03 PM.
