SwEm (Safety) Bulletin Number 4  01/04

Attention All Vintage Volvo Owners : 

 Check your brakelights for proper operation  (Especially Models:  444/544/122/1800)!

The original equipment "hydraulic-pressure-sensing" brake light switches fitted to these models often become sluggish to operate or fail totally, especially on "Sunday Drive" only, or seasonal vehicles which are parked for extended periods.  Brake lights are critically important for keeping drivers behind you (who are in a position to do real damage), informed of your intention to slow and/or stop.  With ignition ON, check that your brake-lights light when slight pressure is applied to the braking system...if it takes jabbing on the brakes or heavy pressure, BEWARE!, it means you will NOT be showing your brake-lights in normal driving situation.   If you are going to drive an oldie, do it safely!  DON'T TAKE CHANCES with your car, yourself, or your passengers!  Check your brake-light function often...and please consider upgrading to the MUCH MORE RELIABLE "pedal-position-sensing" brake-light switches as Volvo itself did on the later vehicles (see below).  These switches are not only more reliable, but they result in brake-lights showing as soon as the pedal comes off its rest position, thereby giving those following the maximum amount of notice of your intent to slow, and time to react. 

There are plenty of distractions which keep drivers occupied with things other than paying attention to where they are putting their vehicles...we're not going to change that.  Add to that, the increasing number of cars on the road, and resulting decreasing separation between vehicles...can't change those things either, unfortunately.  But showing them our brakelights late, or not at all, when those items are under our control, seems like a deliberate compromise of our own safety, when instead, with a simple, common sense, inexpensive solution, we can actually improve our own safety!...and is safety not one of the reasons we drive a Volvo oldie in the first place? 

In my opinion, upgrading from the "late-acting" original equipment brake-light switches to "early-acting", "pedal-position-sensing" switches is not an option on these vehicles!  It is a significant safety improvement, and therefore required!    

Suggested reading:  Link to Tech Article  Hydraulic Brake Light Switch Failure Investigation

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Additional reading:  Brake Light Upgrades

SwEm "pedal-position-sensing" brake-light switch upgrade kits are available:  Link to SwEm Kits page.

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