Alfa Romeo SZ Technical Page

Reverse Light Switch (13/04/11)

Shortly after buying my SZ it was noticed that both the white reversing lights were not working...which was odd, investigation confirmed both bulbs had been removed!

I replaced both bulbs and everything was fine, which was confusing.

But, just the other day it all became clear...I noticed the reverse lights stayed on with the car in neutral. A quick move to reverse gear and back to neutral cleared the error so I suspected the reverse light switch to be the likely culprit.

Thankfully replacement is a quick job.

 

This is the switch (see shared part list below).

It's a plunger type switch which is activated when reverse gear is engaged.

 

From the rear of the car, locate the rubber boot on the left hand side of the gearbox, in front of the brake disc.
Gently pull off the rubber cover to reveal the two connectors.

 

Gently disconnect the two wires and remove the switch using a 22mm ring spanner.

Refitting is the usual reverse of removal.


Testing with a multimeter showed the old switch was still switching ok but it was clear some dirt or congealed oil had lodged around the plunger, so occasionally it may have stuck in the "engaged" position. But as it had been removed already, it made sense to replace with a new one, they're only a tenner!

Switch details:
Intermotor 54100
QH XRLS62
Alfa Romeo 510931
Alfa Romeo 60501196
Fiat 4143258
Lucas SMB437

Shared with:
ALFA ROMEO 145 1.4
ALFA ROMEO 145 1.6
ALFA ROMEO 145 1.7
ALFA ROMEO 33 1.2
ALFA ROMEO 33 1.4
ALFA ROMEO 33 1.5
ALFA ROMEO 33 1.7
ALFA ROMEO 33 1.8
ALFA ROMEO 6 2.5
ALFA ROMEO 75 1.6
ALFA ROMEO 75 1.8
ALFA ROMEO 75 2.0
ALFA ROMEO 75 2.4
ALFA ROMEO 75 2.5
ALFA ROMEO 75 3.0
ALFA ROMEO 90 1.8
ALFA ROMEO 90 2.0
ALFA ROMEO 90 2.4
ALFA ROMEO 90 2.5
ALFA ROMEO Alfetta GTV 2.0
ALFA ROMEO Alfetta GTV 2.5
ALFA ROMEO Alfetta GTV6 2.5
ALFA ROMEO Spider 1.6
ALFA ROMEO Spider 2.0
ALFA ROMEO Sprint 1.7
ALFA ROMEO SZ 3.0
FIAT 126 0.6
FIAT 126 0.7
FIAT 126 Personal 0.6
FIAT 126 Personal 0.7
NISSAN Cherry 1.3
NISSAN Cherry 1.5

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