Heater

For S1 see Heater_Matrix The S2 Elise and Exige have two types of heater controls, manual or electrical. Cars after 2002?? have electrical.

The manual controls are prone to ceasure and the electrical controls prone to water ingress and failure.

Manual controls

??

Electrical controls

There are three elements to the heater in the Elise S2 with electrical controls. One of the most common problems is the loss of temperature control. This is usually because Lotus used a small motor (actuator) to open/close a flap in the heater unit which is prone to rain water ingress and failure. Some people have been able to lube/oil/WD40 the flap which the actuator moves and restore control again but usually the actuator will need replacing.

Do NOT forcefully move the flap open/closed to help free it. You'll eventually break either the motor shaft or gears inside.

Fan/Blower

For fan failure check the resistor pack

Flap distribution control

TBD??

Heater temperature control

For heater temperature control failure try the following fixes which increase in complexity:

1. Remove air pipe and lube flap (See below)
2. Replace actuator through service panel (Only for small handed people!)
3. Heater Actuator Replacement after removing heater unit.

• 

  Remove the Access panels and black plastic covers.

• 

  Remove the air hose (no clips hold it its pressure fit).

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  Hose removed

• 

  Lubricate (The flap may be stuck in other positions)

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DIY air filter

Modification to prevent grit from being sprayed onto the dash. You will need:

• 1 used stocking. 10 denier is best for optimum fan performance. Higher deniers can reduce air flow too much. Lace top optional.
• Difficulty: Very, Very easy.

Directions:

1. Open the front service compartment
2. Remove one end of the air hose
3. Stretch stocking over air hose
4. Refit air hose.

Remember to replace or adjust the stocking annually, or when you notice a drop in airflow.