Rear sunroof issues

J

Jrichards6

Member

Posts

12

Location

Lancashire

• Jan 27, 2024

• #1

Afternoon

I'm in the middle of doing seals on both front and rear sunroof in disco 2.
Presumed rear motor was dead and planned on replacing.
Plugged the front motor in the rear and this doesn't work.
But when either motors are in the front they work.

Are they on 2 seperate fuses, ive checked the fuse it states online which is ok? Any advice would be appreciated.

 

sierrafery

Well-Known Member

Posts

17,910

Location

Arad/Romania

• Jan 27, 2024

• #2

Hi, no separate fuse, both motors are managed by the sunroof ECU directly, didnt you accidentaly push the isolation switch? if not remove it and bridge the wires to rule it out

 

J

Jrichards6

Member

Posts

12

Location

Lancashire

• Jan 27, 2024

• #3

I've tried from both the front and the rear switches no different. Gonna hazard a guess at the ecu. But will try this first

 

sierrafery

Well-Known Member

Posts

17,910

Location

Arad/Romania

• Jan 27, 2024

• #4

Jrichards6 said:

I've tried from both the front and the rear switches no different

Click to expand...

I asked about the ISOLATION switch

PS ... just realised that the front side-rear sunroof switch is not isolated by that

 

Last edited: Jan 27, 2024

sierrafery

Well-Known Member

Posts

17,910

Location

Arad/Romania

• Jan 27, 2024

• #5

The motors are hardwired to the ECU so if the front works and the rear doesnt it can be interrupted wire or faulty ECU as the feed is common so is the earth

 

J

Jrichards6

Member

Posts

12

Location

Lancashire

• Feb 5, 2024

• #6

Turned out rear motor was dead.
Looks as if the rear mechanism isn't for working.
Tried the front motor in the rear without attaching to the frame and it spins fine. As soon as I bolt it in place you can hear it attempting but nothing moves.
So will have to strip the mechanism now...

 

J

Jrichards6

Member

Posts

12

Location

Lancashire

• Feb 5, 2024

• #7

Gonna start with cleaning the tracks and try and wond by hand and see how I get on

 

P

pnutt0

New Member

Posts

1

• May 22, 2024

• #8

Jrichards6 said:

Turned out rear motor was dead.
Looks as if the rear mechanism isn't for working.
Tried the front motor in the rear without attaching to the frame and it spins fine. As soon as I bolt it in place you can hear it attempting but nothing moves.
So will have to strip the mechanism now...

Click to expand...

I have the same issue with both my sunroofs! The armature and motor looks spotless and brushes fine, but the gear and red discs are solid! anyone know how to dismantle before I start?