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Battery check Ford Mondeo 2007 - 2012 Diesel 2.0 TDCi

OnDemand step-by-step maintenance & repair BETA

Ford Mondeo 2007 - 2012  | 2.0 TDCi Battery check

  • time 5 minutes
  • difficulty 1
Locate the battery
Open the battery cover
Check the Positive (+) terminal clamp is tight. CAUTION If using a spanner to tighten the terminal, be careful not to short the spanner on the bodywork
Check the battery is generally secure, and if loose, tighten the battery retainer
The battery retaining clamp position
To tighten, an 8mm socket is needed. Not too tight as you may damage the battery casing
Replace battery cover. If you have to replace the battery or alternator, click below
- Close + Open

Battery removal & replacement

Disconnection

Caution: Wait at least 5 minutes after turning off the ignition switch before disconnecting the battery. This is to allow sufficient time for the various control modules to store information.
Note: Ensure you have the audio unit security code. This code will need to be inputted after reconnecting the battery – refer to the owner’s handbook supplied with the vehicle.
1 The battery is located on the left-hand side of the engine compartment, partially concealed under the windscreen cowl panel.
2 The location of the battery is such that access to the negative (earth) lead terminal clamp on the battery itself is impossible with the battery installed. It is therefore necessary to disconnect the negative lead at its connection on the body (see illustration) .
Battery negative lead connection on the body (arrowed)
3 Unscrew the negative lead retaining bolt while at the same time pulling upward on the lead to keep it in contact with the body (there is a small tab on the underside of the lead which maintains contact while the bolt is undone). With the bolt removed, pull the lead sharply away from the body (see illustration) .
Unscrew the negative lead retaining bolt and pull the lead sharply away from the body
4 Cover the lead end fitting with a piece of rubber or plastic tubing (such as a small piece of garden hose) to prevent accidental contact with the body (see illustration) . Alternatively wrap tape around the end fitting.
Cover the lead end fitting with a piece of rubber or plastic tubing

Removal

5 Disconnect the battery negative lead as described previously.

Petrol models

6 Open the bonnet and remove the plastic rivet securing the radiator grille extension to the front panel by unscrewing the centre section and withdrawing the rivet body.
7 Undo the left-hand headlight upper retaining screw and the lower retaining screw adjacent to the radiator grille.
8 Carefully pull the corner of the grille and bumper towards the front of the car.
9 Lift the corner of the headlight and move the unit as far as possible towards the rear of the car.
10 Pull the headlight towards the centre of the car, behind the grille and bumper, to disengage it from the lower outer attachment point.
11 Disconnect the wiring connector at the rear of the headlight and remove the unit from the car.
12 Loosen the clips and disconnect the air outlet duct from the air cleaner cover and throttle housing. Similarly, disconnect the resonator air duct from the air cleaner cover and resonator (see illustrations) .
Slacken the clips and disconnect the air outlet duct from the air cleaner cover and throttle housing...
...similarly, disconnect the resonator air duct from the air cleaner cover and resonator
13 Reach down and detach the air inlet duct from the front of the air cleaner housing.
14 Pull the air cleaner upwards from its rubber mountings. Squeeze together the sides of the collar and disconnect the crankcase ventilation hose from the air cleaner housing as it’s withdrawn.

Diesel models

15 Pull out the locking tab and disconnect the wiring connector from the mass airflow sensor (see illustrations) .
Pull out the locking tabs...
...and disconnect the wiring connector from the mass airflow sensor
16 Loosen the clip and disconnect the air outlet duct from the air cleaner cover (see illustration) .
Slacken the clip and disconnect the air outlet duct from the air cleaner cover
17 Reach down and detach the air inlet duct from the front of the air cleaner housing.
18 Pull the air cleaner upwards from its rubber mountings (see illustration) .
Pull the air cleaner upwards from its rubber mountings

All models

19 Release the two clips and remove the battery cover (see illustrations) .
Release the two clips . . .
. . . and remove the battery cover
20 Slacken the clamp nut and disconnect the battery positive lead terminal (see illustration) .
Slacken the clamp nut and disconnect the battery positive lead terminal
21 Unscrew the retaining bolt and remove the battery clamp plate (see illustration) .
Unscrew the retaining bolt and remove the battery clamp plate
22 Cut the cable-tie securing one of the battery positive leads to the base of the battery tray, and lift the other positive lead out of the battery tray guide (see illustrations) .
Cut the cable-tie securing one of the battery positive leads to the battery tray . . .
. . . and lift the other positive lead out of the battery tray guide
23 Move the positive leads clear, then slide the battery forward to gain access to the battery negative lead terminal. Slacken the clamp nut, disconnect the negative lead terminal and lift off the lead (see illustration) .
Slide the battery forward, slacken the clamp nut and disconnect the negative lead terminal
24 Lift the battery out of the engine compartment.
25 To remove the battery tray, undo the 3 bolts and lift the battery tray from the support platform (see illustration) .
Battery tray retaining bolts (arrowed)

Refitting

26 If removed, place the battery tray in position and refit the three retaining bolts, tightening them securely.
27 Position the battery on the battery tray.
28 Reconnect the battery negative lead to the terminal and securely tighten the clamp nut. Smear a little petroleum jelly on the terminal.
29 Slide the battery back into its fitted position, then refit the clamp plate and tighten the bolt securely.
30 Reconnect the battery positive lead to the terminal and securely tighten the clamp nut. Smear a little petroleum jelly on the terminal.
31 Secure the positive lead with a new cable-tie and position the other positive lead in the battery tray guide.
32 Refit the battery cover.
33 Refit the air cleaner assembly and headlight (where applicable).
34 Reconnect the battery negative lead to the body as follows.

Reconnection

35 Ensure no-one is inside the vehicle whilst the battery negative lead is reconnected. Remove the rubber or plastic tubing or tape used to cover the negative lead end fitting and place the lead in position on the body. Hold the lead in contact with the body and fit the retaining bolt. Tighten the bolt to the specified torque.
36 Enter the audio unit security code and any preset radio frequencies.
37 Reset the clock to the correct time.

Powertrain control module initialisation

38 Carry out the following to allow the powertrain control module to relearn various engine operating parameters:
  1. Start the engine and allow it to run at idle for approximately 3 minutes.
  2. Increase the engine speed to 1200 rpm and maintain this speed for approximately 2 minutes.
  3. Drive the car for approximately 5 miles of varied driving. Note that during this time the engine may run erratically as the PCM relearns its parameters.

Electric windows initialisation

39 Re-initialise the electric windows as follows:
  1. With the engine running, press and hold the window control close button until the window is fully closed.
  2. Release the button, then press it again 3 times for 1 second each time.
  3. Briefly press the open button to the second detent, then release it. The window should open automatically.
  4. Briefly press the close button to the second detent, then release it. If the window does not close automatically, repeat the complete procedure.
  5. Repeat this procedure on each electric window.

Sunroof initialisation

40 On models with an electric sunroof, re-initialise the sunroof as follows:
  1. With the ignition switched on, press the sunroof control button to the up/close position to tilt the rear of the sunroof as far as possible, then release the button.
  2. Press and hold the same button again for 30 seconds until you see the sunroof move.
  3. Release the button and immediately press and hold it again. The sunroof will close, open fully, then close again. Do not release the button until the sunroof has closed for the second time.
- Close + Open

Alternator replacement

Removal

1 Disconnect the battery negative lead.
2 Remove the auxiliary drivebelt.

Petrol engines

3 Remove the plastic cover on the top of the engine by pulling it straight upwards from its mountings.
4 If not already done, raise the vehicle and support it securely on axle stands. Where fitted, undo the fasteners and remove the engine undertray.
5 Disconnect the wiring plug, then prise out the rubber cap and disconnect the lead from the rear of the alternator. Unclip the alternator wiring harness and move it to one side.
6 Undo the two nuts and remove the exhaust manifold heat shield.
7 Undo the alternator upper mounting nut and the lower mounting bolt and mounting nut, then remove the alternator from below.

1.8 litre diesel engines

8 Remove the plastic cover on the top of the engine by pulling it straight upwards from its mountings.
9 If not already done, raise the vehicle and support it securely on axle stands. Where fitted, undo the fasteners and remove the engine undertray.
10 Disconnect the air conditioning compressor wiring connector, then undo the three bolts and move the compressor to one side.
Caution: Do not disconnect the refrigerant pipes.
11 Disconnect the wiring plug, then prise out the rubber cap and disconnect the lead from the rear of the alternator (see illustration) . Unclip the alternator wiring harness and move it to one side.
Prise up the plastic cover (arrowed) then disconnect the alternator wiring
12 Undo the three alternator pulley bracket bolts, then slacken the three alternator decoupler bolts and remove the decoupler (see illustrations) .
Undo the three pulley bracket bolts . . .
. . . slacken the three decoupler bolts . . .
. . . and remove the decoupler from the alternator
13 Unscrew the alternator mounting bolts and carefully lift the alternator from the engine

2.0 litre diesel engines

14 Remove the plastic cover on the top of the engine by pulling it straight upwards from its mountings.
15 If not already done, raise the vehicle and support it securely on axle stands. Where fitted, undo the fasteners and remove the engine undertray.
16 Undo the three retaining bolts and move the power steering pump to one side.
17 Disconnect the wiring plug, then prise out the rubber cap and disconnect the lead from the rear of the alternator.
18 Slacken the alternator lower mounting clamp bolt, then undo the upper mounting bolts, slide the alternator to the right, and manoeuvre it from its location (see illustration) .
Undo the upper bolts, and slacken the lower Allen bolt (arrowed)

Refitting

19 Refitting is a reversal of removal. Remembering to tighten the various fasteners to their specified torque where given.
Alternator mounting bolts: Nm Ibf ft
  Petrol engines 47 35
  1.8 litre diesel engines 15 11
  2.0 litre engines 10 7
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