GranSport Rear Lights Problem

[S2_DPD]

Hi,

My dashboard light bulb failure warning came on so have just spent a pretty frustrating 2 hours on my knees (bulbs, fuses & relays - not praying).

Anyway, both rear tail lights seem to have stopped working, and from what I can tell, the rear fogs too. Brake lights, registration lights and signals working fine.

Are all the bulbs blown at the same time? - doubt it, however it looks impossible to get to the rear outer-most bulbs without dismantling the whole interior backend as the battery & multi-disc controller are in the way of the bulb sockets.

From what I can see of the rear light cluster, none of the bulbs look to be blown, however that's just seeing through the red lens.

Car and electrics are all dry, connectors have not been moved around in any way. Taken the rear cluster connectors apart, then back together. I've done a power reset with the main battery switch, no joy.

There was a problem with the rear remote boot release which was not working, but fiddling with all the relays and fuses seem to have cleared this, but not the lights....

Any thoughts/help please?

thanks
David

 

[CatmanV2]

Pretty sure on the 4200 you can get to the back of the unit via cutouts in the boot liner. *Very* sure you can get to it when the boot liner is out. Which takes about 10 mins max, although you may have challenges with the changed, I'd be surprised ish.

I'll check the handbook

C

 

[CatmanV2]

Yep, the 4200 manual states there are covering panels to be removed, and specs all the bulbs, so expects them to be user serviceable.

Apologies if the GS is substantively different.

C

 

[S2_DPD]

Thanks for the quick reply

Update - just tried it again to make sure the brake lights were at least working OK for tomorrow's run out, and guess what....and all worked perfectly, no bulbs out, no warning lights no nothing.

So it could be intermittent, in which case electronic I guess rather than bulb/fuse? Will see what happens tomorrow.

In nearly 4 years of GS ownership, first non-consumable problem I've had (discounting electric window motor).

My 3200 had it's interesting times, but on the whole nothing much

 

[CatmanV2]

It sounds rather like a loose earth or something similar.

Let's see what transpires.

C

 

[S2_DPD]

best part of 200 miles over the weekend, not a single problem - looks like the wiggling of wires and praying has sorted it out

 

[CatmanV2]

best part of 200 miles over the weekend, not a single problem - looks like the wiggling of wires and praying has sorted it out

Good stuff!

C

 

[S2_DPD]

So yes it was intermittent and the fault came back.

Got a recommendation of really good auto-electrician who came out and sorted it in no time at all. A few wires had broken within the rubber shroud that runs along the left boot hinge.

He's run some news wires to fix it temporarily while I've ordered a replacement loom for the boot. Worth keeping an eye out on yours.

Eurospares: Special Order Item No. 200492, New Maserati 4200 Gransport (2005), TRUNK CABLE - £49 delivered.

 

[davy83]

Try replacing the relay which is for the rear lights. The original Maserati ones are very cheap, i replaced all of mine and it helped a lot.

 

[S2_DPD]

Try replacing the relay which is for the rear lights. The original Maserati ones are very cheap, i replaced all of mine and it helped a lot.

sorry not sure I understand?

The problem was with broken wires within the loom that goes to the boot. Opening and closing the boot lid over time bends the wires until they break.

Relays are fine.

 

[LORENZ-GS]

Try replacing the relay which is for the rear lights. The original Maserati ones are very cheap, i replaced all of mine and it helped a lot.

Davy, where r these relays that ur referring to. Pics would help to. Would be good to know its also a good idea