348 hazard blinkers - one side working only.

Mike, there are small relays behind the vertical section of the centre console (behind the switch/light panel) which control left and right hazard lights (individually). Unfortunately, they are very hard to source.

I'm not sure how hard the relays are to get to. They may involve removing some of the panels (?). The Workshop Manuals show 3 relays in that area. One for power and two for left/right control.

Aren't the turn indication bulbs used for hazards? Are your left hand turn indicator lights working (front and back)?

 

Here's a picture of the relays... If you can figure out which is which, you could try interchanging the left and right.

F348 Hazard Relays

(EDIT... Sorry, cross-posted... Let me check the diagrams)

Cheers,
Ian

 

Ok, can you get back to me on that? The 348 lighting wiring diagram is not the easiest thing to read

The regular turn signals do go through the third hazard relay and that can interfere with normal turn indication control. But I'll have to check how/if the Left and Right Hazard Turn Relays affect the normal turn signals.

 

There are relays integrated into the vertical switch panel, meaning they're quite easy to access. I've never tried to source one though.

There is also a flasher just below the dash on the left side, hiding behind the carpet, screwed to the wheelwell. IIRC that's the turn signal flasher but it might actually be part of the hazard circuit (my memory is terrible).

 

Correct (I don't mean the part about your memory being terrible )

Here's the circuit...

F348 Lighting Diagram

On first impression, if the power relay "208" is working normally, the normal turn indications should be fine. Unless all 3 bulbs are blown or all 3 earths are faulty, I think it would be hard to kill both turn and hazard lights on one side only.

 

For info: The flasher unit mentioned by Mike only has one flasher output. It doesn't put out independent signals to left and right sides. It's the turn switch and the hazard relays which determine where the flasher unit output goes.

This operation is different to the F355 which has outputs to left and right sides on different pins.

 

Do you mean the light in the switch and the hazard light on the row of indicators above it?

If it's not illuminating, this might also point to a faulty Left Hazard Relay. The Left Hazard Relay "210" controls the left hand side lights and also the indicator above hazard pushbutton. If the relay solenoid is faulty, this would affect the lights and the indicator. The solenoid may be ok, but one of the relay's dual contacts may be faulty, in which case, the lights may be faulty, but the indicator may be ok.

 

...which reminds me.... The left and right hazard relays may not be be interchangeable because the left relay has two contacts and the right only has one. This makes it hard to faultfind the problem.

 

Then there may be just one faulty contact on the Left Hazard Relay (or wiring problems).

Unfortunately, I think people are unwilling to sell the relays alone. You may have to buy a whole panel (second hand). There was a message thread on the forum about a similar problem. I think the guy with the problem either added a (big) relay to the wiring or modified the original (not sure).

 

The relay probably just needed some exercise

Thanks for the feedback.

Cheers.

P.S. Since the solenoid seemed to be working, perhaps one of the contacts on the relay was a bit corroded. If it happens again, maybe it's possible to open up the relay and clean the contacts (carefully).

 

Hello,
You have already met, solved, the problem of the headlights calls that does not work.

 

Hello everyone, right side relay is broken and attempting a rebuild, maybe possible but not probable. Anyone know where I can get the whole panel with the relays just Incase...?

Thanks,
Barret

 

Which car is it for? Year? Country? Spider?
Check the Ricambi site for the part number on their Car Diagrams or just find the number on your panel. There are a number of part numbers listed for Canada, depending on age and model. If it's unique to Canada and out of stock, you'll probably have to contact a few Canadian wreckers and specify that you need the relays as well as the panel. I don't know if they'd be willing to sell you individual relays.

 

The button panel normally comes with the mini-relays attached (I can't recall anyone ever selling them separately).

When my hazard warning lights failed on the left hand side, which would have caused an MOT (annual safety inspection) failure, the Ferrari specialist I used told Me you cannot get the mini relays on their own, so gave me three options:

Option 1): Buy a new replacement button panel for @ £800 ($1115)
Option 2): Buy a used replacement button panel for @ £400 ($557)
Option 3): Wire in a standard sized relay for @ £6 ($8)

I asked about option 3, and they said they would make a bracket to hold the relay to the back of the panel and wire it in, and they assured me that it would be out of sight, and work exactly as the original relay did - So I went with Option 3.

It worked perfectly, and passed the MOT test.

So there's another option - Rather than spending a load of money on a replacement button panel, see if you can mount a standard relay to the back of the original panel instead, for just a few £'s/$'s.

 

That’s a great solution but how do you wire it? As there are three different relays connected to the wiring? You wouldn’t happen to have a picture of the completed work? Wish I could visit your guy in Europe!

 

As long as the big relay simulates all the functions of the small relay (for the right side), you could just wire in the new relay to the old socket (or perhaps cut the top off the old relay and use the old relay base, and mount the new relay on top). It's a cheap solution, but probably not the prettiest.
The right side relay just has one pole (set of contacts) which is normally open.

See item 209 in the following diagram for pin numbers:

Lighting Wiring Diagram

 

It is not difficult. Note the numbers at the original relays on the diagram (see the enlarged extract below). You will see numbers 87b, 87, 86, 85, 30 at the pins of the left relay etc. The larger standard cube relays will have the same numbering at their pins so you just match numbers with numbers. The three types of the original small relays are also available as standard cube relays (and are also present on the car's relay panels), as follows.

Original Relay 210 - This is same as the "K" relay on the footwell panel (its pins are 87b, 87, 86, 85, 30); a bit uncommon type but available (Volvo p/n 1235893, Bosch 0 332 015 001, 0 332 015 006, 0 332 015 012, 0 332 015 013, Mercedes K15 Relay (I bought new Bosch 0 332 015 001 on Ebay Germany https://www.ebay.de/itm/Relais-Arbeitsstrom-Relais-Fernscheinwerfer-Relais-BOSCH-BMW-MOTORCYCLES-R/112104050515?epid=1114596664&hash=item1a19ec0f53:g:WtsAAOSwjL5ZMlvQ)

Original Relay 209 - This is the very common 4-pin relay with pins 87, 86, 85, 30.

Original Relay 208 - This is also quite common, 5-pin relay with pins 87a, 87, 86, 85, 30 ("change-over relay").

By the way, these relays do not do any "blinking", they just all come "on" when you press the hazard switch. The hazard blinking is still done by the turn signal "blinker" relay.


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Thanks a lot guys, had no idea. Much appreciated!

 

Has anyone managed to pull out the three small hazard switch relays? My parking light switch is faulty and I am trying to replace it with a new one but it seems that, in order to remove the back cover of the module, I have to remove the three relays. Tried to pull them out (with a controlled force) but they wouldn't move at all; looks like they are soldered to the board and not plugged in.