Replaced water pump in 2001 bmw z3 and now car won't start

The main fuse panel is in the front PS engine compartment (near PS headlight but it has various fuses everywhere.
Here is the Elec. troubleshooting pfd that may help or not ;-) :
http://wedophones.com/Manuals/BMW/2001%20BMW%20Z3%20-%20M%20Roadster%20-%20Z3%20-%20M%20Coupe%20Electrical%20Troubleshooting%20Manual.pdf

Good luck.

www.radio-code.com

check your ignition system
hope you find it

I had this same problem - 2 things to check:
Most likely it's the 3rd brake light - check the seal on the inside (you need to remove the black plastic cover inside the boot lid to be able to see - this has 4 or 6 little tabs that hold it in place and break very easily, so take care as you remove it. I suggest using a blunt knife or similar to ease it out). I had mine replaced not that long ago and as far as I can recall they're pretty inexpensive.
Also check the rubber seal that goes all the way round the boot opening, make sure it's attached all the way round and has no defects.
Hope that helps!

Sounds like it. Loosen the belt and try to turn the pump by hand. It should turn quit easily. If it doesn't, it will need attention.

it wont be a dip stick as such it will be a single bolt on the side of the gearbox remove this then top up the gearbox until the oil starts weeping out of this hole wait for it to stop leaking then replace the bolt job done!

It might be an interlock. Try rolling the car forward and back when this happens until the key turns. It doesn't take much, you should be able to do it from the drivers seat in a small car like the z3

If the radio is displaying code wait, or wait, then the ignition and radio must remain on for 1hour. I would contact a dealer within the USA and provide them with your radio serial number. The serial number can be displayed in the radio by pressing and holding down the "M" button while turning on the ignition.

3.0 Coupe

Removing and installing complete water pump (M52 / S52 /M52TU/ M54 / M56)

Remove alternator drive belt, refer to Engine, Cooling and Exhaust - Engine - Drive Belts, Mounts, Brackets and Accessories - Drive Belt - Service and Repair - Procedures See: Engine\Drive Belt\Service and Repair
Note: M52/S52 The water drain plug is located on the exhaust side between cylinders 4 and 5 in the engine block (illustration).
M52TU / M54 / M56 The water drain plug is located on the exhaust side on cylinder 2 in the engine block.
Drain and dispose of coolant.

Installation:
Replace seal.
Tightening Torque, refer to Specifications - Mechanical. See: Specifications
Vent cooling system and check for leaks, refer to Engine, Cooling and Exhaust - Cooling System - Service and Repair - Procedures. See: Service and Repair
Release belt pulley,Release water pump.,Tighten two screws (M6) into thread of water pump and water pump out of timing case.

Installation:
Replace O-ring and coat with coolant as anti-friction agent.

2.5L Roadster
SAME PROCEDURE FOR PICTURES Email Me @ aol.com

DME relay is faulty, its seperate from the ecu and was most likely fried when the ecu went........did anyone try to run an on board diagnostic code pull?