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Battery check Land Rover Defender 1983 - 2007 Diesel 2.5 TD5

OnDemand step-by-step maintenance & repair BETA

Land Rover Defender 1983 - 2007  | 2.5 TD5 Battery check

  • time 5 minutes
  • difficulty 1
Locate the battery, you will need to remove the driver's seat to gain access
Open the battery cover
Check the Negative (-) terminal clamp is tight
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
To tighten, a Phillips screwdriver is needed. Not too tight as you may damage the battery casing
Replace battery cover and reposition the seat. If you have to replace the battery or alternator, click below
- Close + Open

Battery removal & replacement

Removal

1 The battery is located in a compartment under the left-hand front seat.
2 Unclip/lift up the seat cushion, and remove it from the vehicle. Undo the retaining screws, and remove the access panel (where fitted) situated beneath the seat.
3 Slide the seat fully rearwards, then slacken and remove the front bolts (and nuts) securing the seat to the floor.
4 Slide the seat fully forwards, undo the rear bolts (and nuts) securing the seat to the floor, then remove the seat from the vehicle. Where applicable, disconnect the seat heating wiring plugs.
5 Release the securing clip, and lift the cover panel from the battery compartment (see illustration) .
Releasing the battery cover panel securing clip
6 Loosen the clamp nut and bolt, and disconnect the battery negative lead.
7 Similarly, disconnect the battery positive lead.
8 Unscrew the nuts securing the battery clamp in position. Recover the washers (see illustration) .
Unscrewing a battery clamp securing nut (arrowed)
9 Lift off the clamp bracket, then lift out the battery.
10 Clean the battery terminal posts, clamps, tray and battery casing.

TD5 models

11 The battery is located under the passenger’s seat.
12 Remove the passenger’s seat cushion, and where applicable, lift the rubber insulation material to expose the battery cover and clip.
13 Release the clip and remove the battery cover (see illustration) .
Release the battery cover clip and slide the cover forward
14 In order to prevent the anti-theft alarm from sounding and the vehicle being immobilised, turn the ignition switch to position II, then to position 0, remove the ignition key and disconnect the battery negative lead within 15 seconds (see illustration) .
Turn the ignition switch to position II
15 Slacken the nut and disconnect the battery positive lead clamp (see illustration) .
Slacken the bolt and disconnect the positive lead clamp
16 Slacken the nuts and move the battery clamp to one side (see illustration) .
Battery clamp nuts (arrowed)
17 Lift the battery from position.

Refitting

18 Refitting is a reversal of removal, but always connect the positive terminal clamp first and the negative terminal clamp last. After connecting the battery terminals, it’s a good idea to apply a layer of petroleum jelly to the terminals to prevent corrosion.
- Close + Open

Alternator replacement

10J, 12J, 19J and 200 TDi engines

1 Disconnect the battery negative lead.

Refitting

17 Refitting is a reversal of removal, but tension the drivebelt.

300 TDi engines

18 Disconnect the battery negative lead.
19 Remove the auxiliary drivebelt.

Refitting

26 Refitting is a reversal of removal, but refit and tighten the auxiliary drivebelt as described in Section 2 .

TD5 engines

27 Disconnect the battery negative lead.
28 Remove the auxiliary drivebelt.

Except 200 TDi

2 Disconnect all the hoses from the air cleaner canister, noting their locations. If desired, to improve access, the air hoses can be removed completely.
3 Release the securing clips, and lift the complete canister from the base assembly.
4 Unscrew the securing bolts, and remove the base/bracket assembly from the engine compartment.

200 TDi

5 Disconnect the air inlet and outlet hoses from the air cleaner casing. If desired, to improve access, the air hoses can be removed completely.
6 Release the two air cleaner retaining clamps.
7 To release the assembly from its mounting bracket, twist the assembly anti-clockwise (viewed from the front of the engine).
8 If desired, the mounting bracket can be unbolted from the body.

All engines

9 Where necessary to improve access, remove and the cooling fan and cowl.
10 On 200 TDi engine models, to improve access, slacken the securing clips, and remove the hoses connecting the intercooler to the inlet manifold and the turbocharger.
11 Disconnect the wiring from the rear of the alternator.
12 Slacken the alternator adjuster bracket pivot bolt.
13 Remove the bolt securing the alternator to the adjuster bracket, and recover the washers (see illustration) .
Unscrewing the bolt securing the alternator to the adjuster bracket – 19J engine
14 Loosen the two bolts (and nuts, where applicable) securing the alternator to the mounting bracket (see illustration) . Where necessary, counterhold the nuts as the bolts are loosened.
Unscrewing an alternator securing bolt (arrowed) – 19J engine
15 Pivot the alternator sufficiently to release the drivebelt from the alternator pulley.
16 Remove the two bolts (and nuts, where applicable) securing the alternator to the mounting bracket, and withdraw the alternator.
20 Where applicable, unscrew the three securing nuts and withdraw the heat shield from the rear of the alternator, to expose the wiring connections.
21 Disconnect the electrical leads from the rear of the alternator (see illustration) .
Disconnect the wiring (arrowed) from the rear of the alternator
22 Remove the lower alternator securing bolt. Where applicable, recover the washers, noting their locations (see illustration) .
Removing the lower alternator securing bolt – 300 TDi engine
23 Working at the top of the alternator, counterhold the through-bolt, and unscrew the nut. Again recover the washers, noting their locations.
24 Where applicable, withdraw the heat shield from the rear of the through-bolt.
25 Remove the through-bolt, and withdraw the alternator from the engine (see illustration) .
Removing the alternator through-bolt – 300 TDi engine
Alternator mounting bolts and nut 25 Nm (18 Ibf ft)
29 Prise up the rubber boot, undo the nut and disconnect the lead from the alternator (see illustration) , then disconnect the wiring plug from the rear of the alternator.
Prise up the rubber boot and disconnect the wiring
30 Undo the bolt, and remove the auxiliary drivebelt tensioner pulley assembly (see illustration) .
Undo the drivebelt tensioner retaining bolt (arrowed)
31 Remove the bolt securing the support bracket to the top of the alternator.
32 Release the clip securing the oil drain hose to the vacuum pump (see illustration) .
Release the oil drain hose clip
33 Slacken the union bolt and disconnect the vacuum pump oil feed pipe. Discard the sealing washers, new ones must be fitted.
34 Undo the alternator lower mounting Torx bolt and remove the alternator, disconnecting the vacuum pump oil drain hose as the alternator is withdrawn (see illustration) . Take great care not to damage the radiator cooling fins as the unit is withdrawn.
Undo the alternator lower mounting bolt
35 If necessary, undo the 4 bolts and detach the vacuum pump from the alternator (see illustration) .
Vacuum pump mounting bolts (arrowed)

Refitting

36 Refitting is a reversal of removal, but tighten all fasteners to there specified torque (where given).
Alternator mounting bolt 45 Nm (33 Ibf ft)
Alternator support bracket 25 Nm (18 Ibf ft)
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