It looks like to change the brake light switch one has to take the driver's seat out and lay on one's back and somehow reach up.
Sound about right?

Remove the knee bolster and it will allow much more space to work.
No reason the remove the seat.

The bolster is held in place with (2) torx head screws.
The screws are located under removable plugs (trim).
Pop the plugs out, remove the torx screws and pull the bolster straight out and off.
Also, slide the drivers seat back as far as it will go.

You now have room to work.

When I replaced a heater fan on a 700 (the second one I had done), I made a nice bed out of a plank, a milk carton, and cushions from a lawn chair so that I could lie in comfort - I even had a pillow!

I'd sure try it with the seat in first....took a good hard look at mine a few weeks back as I thought it had failed. Turned out fine when I tested it....

Yup, those things are as reliable as such things come.

http://cleanflametrap.com/brakelights.htm
--
Art Benstein near Baltimore

If you lend someone $20 and never see that person again, it was probably worth it.

Perform the tasks and inspect causes to rule out a failed switch as Uncle Art directs in the prep section of his website article.

Don't get the FAE brand switch. And don't get so-called universal stop (or brake light) switches. The barrels are made of aluminum. The thread barrel and the switch body are weekly joined together and can fail as you adjust brake light switch plunger stand off from the brake pedal level.

Current Volvo PN is 3544691. Dunno the OEM.

Tasca Volvo entry:
http://www.tascaparts.com/oe-volvo/3544691



My entry on this deplorable task. In 2015 I replaced the switch three times across two states.
https://www.brickboard.com/RWD/volvo/1618581/220/240/260/280/fae_brand_brake_light_switch_fails_three_months.html

iPd sells a MTC stop light switch:
https://www.ipdusa.com/products/6430/114596-brake-light-switch

FCP Groton sells a FAE SLS, and that looks the same as the MTC.
https://www.fcpeuro.com/products/volvo-stop-light-switch-at-pedal-3544691

FCP also sells Volvo OEM for more than Tasca.
https://www.fcpeuro.com/products/volvo-brake-light-switch-3544691oe

yet on eBay:
http://www.ebay.com/itm/Volvo-Stop-Light-Brake-Switch-New-in-bag-3544691-Fits-models-from-1975-1998-/331828199569?hash=item4d42808091

Search for:
Volvo 3544691

An SLS that appears like that which is OEM, as Art shows, should be a near drop in that may not require stand off adjust to and from the brake pedal.

Say no to FAE and MTC brand for your 240. Or anything that appears as such. Though on web pages appearance can deceive.

Slappy Friday. 'Tis the EggNog Hollidayze, Once Again.

cheers,

Poor Nephew.
--
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