Driver power seat stopped working?

2011 AUDI A4
95,000 MILES • TURBO • 4WD • AUTOMATIC
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BHAMDOC1
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Left rear window open by mistake and found carpet wet as well as under the seat. Cacummed all the water from under the seat and blew off all the water from the connectors under the seat, atill seat not working, neither forward/ back nor recline. I checked only fuse i know on driver side dash side and it was good. Hammered the motors lightly nothing happened.
Oct 7, 2026 at 7:59 AM

What to check next

Diagnostic guidance. Suggested checks and possible repairs are separate from the owner's reported results.

Start with the water-affected wiring and the seat’s electrical supply. Several seat movements stopped working after the water exposure, so checking their shared power and ground is a reasonable first step. Inspect beneath the seat for remaining moisture and visible corrosion or damage around the seat-power wiring. Drying a connector’s exterior does not establish that its electrical connection is sound. Using the wiring diagram for this vehicle’s seat equipment, have the correct power feed and ground tested under load. Checking for power at the switch helps determine whether electricity is reaching it; it does not mean the switch needs replacement. If power is missing, trace the specified fuse and supply wiring. If testing finds a damaged terminal, wire, or ground connection, repair that fault and retest the seat. If power and ground are sound, continue with switch and any fitted seat-control module diagnosis before replacing motors. Do not probe airbag or seat-belt tensioner connectors beneath the seat, or apply power to unidentified terminals. Have a qualified technician perform testing if the circuits cannot be positively identified. The next step is to verify the seat’s power and ground and inspect the water-affected connections. No failed component or successful repair has yet been confirmed.

Guidance references and applicability

Original discussion: 2011 Audi A4, “Driver power seat stopped working?” https://2carpros.com/questions/driver-power-seat-stopped-working--1713515 Documents the water exposure, loss of several seat movements, and suggestion to check the switch’s power supply. Fluke: “Diagnosing voltage drops” https://www.fluke.com/en-us/learn/blog/automotive/electrical-automotive-troubleshooting Supports the general diagnostic principle of checking power and ground connections under load before replacing electrical components. Checking the shared supply and water-affected wiring first is reasoning based on the reported symptoms, not a confirmed diagnosis or a documented most-common repair. Exact Audi fuse numbers, connector pins, seat configuration, and restraint-system service procedures have not been verified here. Consult the applicable vehicle service information before testing.

Read the replies · Discussion summary and reported outcome

AI-ASSISTED GUIDANCE · REVIEWED BY 2CARPROS
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STRAILER
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I would remove the seat control switch and check for power at the red/blk wire, let me know how to goes.
Oct 9, 2026 at 4:03 PM
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BHAMDOC1
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Where is the control switch? You mean the seat switch that moves the seat?
Oct 9, 2026 at 4:39 PM
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STRAILER
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Yes, the movement control switch.
Oct 9, 2026 at 6:52 PM
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BHAMDOC1
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  • 423 POSTS
Hmm i doubt its the switch cause it was fine before the water, and its high up to get any water in it. Ypu mean test the switch power and see if it has any?
Oct 9, 2026 at 7:35 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,673 POSTS
Yes, check the red and black wire for power at the control switch.
Oct 12, 2026 at 8:16 AM
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Discussion summary

Driver power seat stopped working?

The owner reported that the driver power seat stopped moving forward, backward, or reclining after water entered through an open rear window and soaked the carpet and area beneath the seat. Removing the water and blowing water off the under-seat connectors did not restore operation. The owner reported that the driver-side dash fuse they checked was good. A contributor suggested checking for power at the seat movement control switch. The owner asked for clarification about the switch and the proposed power check.

Reported outcome: No power-test result, diagnosed fault, or successful repair was reported in the supplied discussion.

The timing suggests a possible connection with the water exposure, but the discussion does not establish which component or circuit failed. The suggested power check is not a confirmed diagnosis of a bad switch.

Read the original discussion

AI-ASSISTED SUMMARY · REVIEWED BY 2CARPROS
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