Hi all im new here but i need some help i have a 2008 a5 3.0 tdi quattro coupe an the two electric seats have stopped working i have tried all the fuses an they seem to be good is there anything else i can try before i take it to a garage thanks

Hi all im new here but i need some help i have a 2008 a5 3.0 tdi quattro coupe an the two electric seats have stopped working i have tried all the fuses an they seem to be good is there anything else i can try before i take it to a garage thanks

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Any indication of a fault before? If both seats have stopped working, then that suggests a linked power issue. Check fuse, if that’s fine, then check the actual wiring connectors. Trouble with electric seats is you can’t move them to access the splined bolts that hold them to the floor to really see what’s going on. You can of course add separate 12v supply to the motor to move them if you were stuck. Has floor ever been wet tghat would indicate corrosion or oxidisation? Any work done recently where seats were removed?

Inspect the connectors underneath for anything obvious, broken wire, etc. you could even try full 12v disconnect for 5-10 minutes to see if that physically resets them.

There’s a module on both seats 8T0959760C, that controls memory function. Pretty sure it’s not this.

Apologies for jumping in. Both not working is unusual. However, simple things first:-

Worth spraying the under-seat connectors a good spray of Contact Cleaner, then wiggling them, but DO NOT DISCONNECT them for fear of setting off the air bags.

Regards,

Gareth.

On 4/4/2026 at 8:11 AM, spartacus 68 said:

Any indication of a fault before? If both seats have stopped working, then that suggests a linked power issue. Check fuse, if that’s fine, then check the actual wiring connectors. Trouble with electric seats is you can’t move them to access the splined bolts that hold them to the floor to really see what’s going on. You can of course add separate 12v supply to the motor to move them if you were stuck. Has floor ever been wet tghat would indicate corrosion or oxidisation? Any work done recently where seats were removed?

Inspect the connectors underneath for anything obvious, broken wire, etc. you could even try full 12v disconnect for 5-10 minutes to see if that physically resets them.

There’s a module on both seats 8T0959760C, that controls memory function. Pretty sure it’s not this.

Hi thanks for the replys no the floor hasn't been wet in anyway how can i move them with a 12v battery please just so i can lift them to see the wire properly.

11 hours ago, brenton said:

Hi thanks for the replys no the floor hasn't been wet in anyway how can i move them with a 12v battery please just so i can lift them to see the wire properly.

You’d need a separate 12v battery, or use a jumper lead from the main battery to the seats. If you can see the motor, then add positive and negative to that. Before doing this double check if the car has thermal fuses related to the seats.