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Land Rover/Jaguar 2.2 diésel (TD4, SD4, eD4)Urgency: As soon as possible

Coolant warning light on (low level or temperature) in the 2.2 TD4 / SD4 engine: causes

In the 2.2 TD4 / SD4 engine, 1 documented fault may be the cause: coolant leak from the EGR valve cooler.[1]

What to do now

As soon as possible

Slow down, stop on level, safe ground and switch the engine off. With the engine cold, check the level in the expansion tank and look for leaks; if the level drops again or the light persists, do not keep driving and call for assistance.

What it means

It is the symbol of a thermometer over wavy lines, which warns of a problem in the cooling circuit: low fluid level or excessive temperature. The colour changes by brand (red, yellow or blue) and the seriousness of the warning depends on it.

Coolant light: causes in all cars

10 sourcesHow we work

Engine faults that cause it

From most to least important. Under each fault, how the symptom shows up. Check the affected years and versions on each page.

  1. Source for the symptom[1]

Other common causes: coolant light

Besides the documented faults of the 2.2 TD4 / SD4, these are the most common causes on any car according to the sources.

  • Coolant level below the minimum[3][4]Common
  • Leak in hoses, radiator, water pump or expansion tank[3][5][6]Common
  • Deteriorated cap or expansion tank[4]Possible
  • Thermostat stuck closed[3][5][7]Possible
  • Faulty water pump[3][5][7]Possible
  • Blocked radiator or faulty electric fan[3][5]Possible

What to check first

  1. As soon as it comes on, reduce your speed, avoid hard acceleration, find a level, safe place, stop and switch off the engine.[3][8]
  2. Wait for the engine to cool before opening the bonnet (RACE says about 15 minutes; Autodoc Club speaks of 30 to 45 minutes before checking or topping up). Do not open the expansion tank with the engine hot: the fluid comes out under pressure and can cause serious burns.[3][9][10]
  3. With the engine cold and the car on level ground, look at the level in the translucent reservoir: it should sit between the minimum and maximum marks.[4][9]
  4. Look for stains under the car (usually yellow or green), but remember there are leaks with no visible stain. Also watch for white smoke from the exhaust or milky coolant, signs that the fluid is entering the engine.[5][6][9][10]
Complete guide: coolant warning light on (low level or temperature)

Cars with the 2.2 TD4 / SD4 engine

Open yours to see only the faults that affect it according to its years and versions.

Frequently asked questions

Coolant light in the 2.2 TD4 / SD4: what could it be?

In the 2.2 TD4 / SD4 engine, 1 documented fault may be the cause: coolant leak from the EGR valve cooler. Each fault has its own page with the affected years and versions, the cause and how to check for it.

Coolant light in the 2.2 TD4 / SD4: is it serious?

Urgency: as soon as possible. Slow down, stop on level, safe ground and switch the engine off. With the engine cold, check the level in the expansion tank and look for leaks; if the level drops again or the light persists, do not keep driving and call for assistance. The most serious fault that causes it on this engine has high severity.

Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. Land Rover Freelander Mk2 common problems 2006-2015Haynes · Technical documentation · published December 2022 · consulted 5 October 2026
  2. Avis Range Rover Evoque 2.2 SD4 190 ch automática, 150.000 km, de 2012Fiches-auto · Owners' forum · consulted 5 October 2026 · in French
  3. ¿Qué es el testigo del líquido refrigerante y qué hacer si se enciende?RACE · Motoring press · published 27 May 2026 · consulted 4 October 2026 · in Spanish
  4. Vaso de expansión del coche: ¿Qué es y para qué sirve?Autopista · Motoring press · published August 2025 · consulted 4 October 2026 · in Spanish
  5. ¿Por qué se calienta el coche?RACE · Motoring press · published 24 July 2023 · consulted 4 October 2026 · in Spanish
  6. Un mecánico advierte sobre si tu coche pierde refrigerante: «Tienes que cambiar la bomba y todas las juntas»El Español · General press · published 20 September 2025 · consulted 4 October 2026 · in Spanish
  7. ¿Cómo funciona el circuito de refrigeración de un coche?RACE · Motoring press · published 30 May 2023 · consulted 4 October 2026 · in Spanish
  8. ¿Qué significa cada testigo rojo del coche?RACE · Motoring press · published 23 June 2026 · consulted 4 October 2026 · in Spanish
  9. Está siendo el verano más caluroso, así que es el mejor momento para revisar el líquido refrigerante. Así se haceMotorpasión · Motoring press · published 19 August 2023 · consulted 4 October 2026 · in Spanish
  10. ¿Por qué se calienta el coche?: síntomas y consecuencias del sobrecalentamiento del motorAutodoc Club · Technical documentation · published 22 November 2021 · consulted 4 October 2026 · in Spanish