Just done my mums this morning.
Pull of the fuse box cover from the bottom and put it aside, look under the steering wheel at the part where you just took the cover off (It looks like black metal with holes in it)
Look up in the left hand side of this (right up, a torch is needed) and you should see a top of a blue fuse (15amp) in a black casing (It may have another fuse next to it but you want the blue fuse at the front) pull this up and replace even if it dodn't look blown as mine looked fine but on replacing it my boot release works fine!
Hope that make sense. Reading it now, it proberly doesn't make sense but print it out and bring it with you to the car.
Good luck!
The central locking relay is attached to the ECU, fitted behind the right (EU) back passenger side panel.
behind the glove box it is a long grey box behind the relay panel thats behind the glove box 2 pins slide out and release the glove box and its easy to get to then
Over there
They are at the back behind the ashtray, look in the gap at the top of the fuses.
If you problem is with a Mk3 fiesta you will probably find its the controlling relay for heated window as over time this gets hot and melts? it just a case of renewing it. It is located behind fuse box inside car.
One way you locate the indicator relay on your 1999 Ford Fiesta it by looking in the user manual. The manual has diagrams showing the parts of the car.
The 1996 Kia central relay switch can be found in the fuse box. The central relay switch will be at the bottom of the third column.
how to check out the relay in a central air conditioning unit
The BMW 518 central locking relay switch is located beneath the dashboard. The central locking relay switch will be on the drivers side of the dashboard.
the standard location will be on the firewall.
its soldered into the central electronics module (A grey box) which is located behind the dashboard just underneath the main headlight switch.
Up through 87 the relay was located behind the ashtray behind the fuses. 88 and up, the relay panel is accessed from the passenger side panel on the side of the center concol. If earlier version, relay "I" - if behind side panel, relay "G".