Hi all,

I've got a 2014 Ducato van (pre-facelift) with the W16W type bulb in the door mirrors indicators. Now thanks to a truck driver one of the mirrors recently got ripped off as he passed me whilst veering onto my side of the road.

I've since purchased another complete electric mirror (used) but have now found out that it has the older W5W indicator bulb and is giving dash error messages. So I ordered a W16W bulb but after installing it I'm still getting error messages on the dash and the bulb is very dim when lit. I also tried the W16W bulb from the other door mirror to make sure it wasn't the bulbs, but got the same result.

Given the above, is it likely that the mirror has some internal circuit board that can detect the different bulb types? as the wiring for the mirrors plugs and bulb holder are identical. I've checked the remains of the old mirror and the only place I can presume a circuit board would be is in the mirrors motor housing?
So I just need to know if I need to buy another complete W16W door mirror or if I can simply swap over any of the internals from the original mirror so the new bulb works at full brightness and the "check light" error message stops.

TIA

Only come across this once on my old 62 plate,
The aftermarket mirror came with the5w 501type bulb, fortunately the original 16w large bulb was still in tact, swapped and worked fine

My guess would be the mirror

rolopolo said:

Only come across this once on my old 62 plate,
The aftermarket mirror came with the5w 501type bulb, fortunately the original 16w large bulb was still in tact, swapped and worked fine

My guess would be the mirror

Click to expand...

Thanks for the reply and info, rolopolo.

The add to my original post, the used mirror I purchased was advertised as (and appears to be) a genuine Fiat unit with factory markings on the underside. It was also described as being from a 2015 vehicle which I presumed would be the W16W bulb as standard as I heard that Fiat changed to the higher watt bulb on their ducato vans around 2011/12 (previously only the motorhome version had the W16W fitted). However, this mirror has come supplied with the W5W indicator bulb and lens unit.

I was hoping that there would be a simple swap of the internals to make the replacement mirror compatible, but from what you say it's starting to look like I may have to purchase another complete mirror which is a pain. I just don't understand why this (seemingly genuine) mirror would not work with the correct bulb fitted?

I'd be thinking along the lines of sellers bad advertising.
I actually argued with the eBay seller of mirrors after informing him of his bad advertising or lack of product knowledge

He wasn't having it, even though I sent him proof off the fiat parts catalogue of the change