Description
Check part compatibility by using our vehicle filter options below. If you find your car, this part is compatible.
The glow plug control relay (OEM A6429001402) is a critical engine electrical component for Mercedes-Benz diesel engines, responsible for managing and regulating the electrical current delivered to the glow plugs during the cold start process. It ensures that each glow plug receives the correct power and timing to pre-heat the combustion chambers, enabling smoother engine starts, especially in cold conditions. A faulty glow plug relay can lead to difficult starts, extended crank times, rough idle, excessive white exhaust smoke, or dashboard glow plug warnings. Replacing a worn or failing control relay with a reliable unit helps restore proper diesel start-up performance and supports consistent combustion and emissions control.
OEM Number: K68013182AD, K68013182AC, K68013182AB, K68013182AA, A6421532079, A6421530379, A6421531979, 6429001402
GLOW PLUG CONTROL UNIT RELAY
EASY INSTALL – DIRECT REPLACEMENT
2 PLUGS – 1 AND 12 PINS
Voltage: 12V
Quantity : 1
| Make | Model | Variant | Type | Engine | Chassis | Year |
|---|---|---|---|---|---|---|
| Chrysler | 300C | Diesel Estate | 3.0 CRD | 2987cc 160KW 218HP EXL | RWD — LX,LE | 2005-2010 |
| Chrysler | 300C | Diesel Saloon | 3.0 CRD | 2987cc 160KW 218HP EXL | RWD — LX,LE | 2005-2012 |
| Chrysler | 300C | Diesel Saloon | 3.0 V6 CRD | 2987cc 155KW 211HP EXL | RWD — LX,LE | 2010-2012 |
| Jeep | Grand Cherokee | Diesel Off-Road Vehicle | 3.0 CRD | 2987cc 160KW 218HP EXL | RWD III WH,WK | 2005-2010 |
| Jeep | Grand Cherokee | Diesel Off-Road Vehicle | 3.0 CRD 4×4 | 2987cc 155KW 211HP EXL | AWD III WH,WK | 2006-2010 |
| Jeep | Grand Cherokee | Diesel Off-Road Vehicle | 3.0 CRD 4×4 | 2987cc 160KW 218HP EXL | AWD III WH,WK | 2005-2010 |
| Mercedes-Benz | C-Class | Diesel Estate | C 320 CDI | 2987cc 165KW 224HP OM 642.910 | RWD — S203 | 2005-2007 |
| Mercedes-Benz | C-Class | Diesel Estate | C 320 CDI | 2987cc 165KW 224HP OM 642.960 | RWD — S204 | 2007-2014 |
| Mercedes-Benz | C-Class | Diesel Estate | C 320 CDI 4-matic | 2987cc 165KW 224HP OM 642.961 | AWD — S204 | 2007-2011 |
| Mercedes-Benz | C-Class | Diesel Saloon | C 320 CDI | 2987cc 165KW 224HP OM 642.910 | RWD — W203 | 2005-2007 |
| Mercedes-Benz | C-Class | Diesel Saloon | C 320 CDI | 2987cc 165KW 224HP OM 642.960 | RWD — W204 | 2007-2014 |
| Mercedes-Benz | C-Class | Diesel Saloon | C 320 CDI 4-matic | 2987cc 165KW 224HP OM 642.961 | AWD — W204 | 2007-2014 |
| Mercedes-Benz | C-Class | Diesel Saloon | C 350 CDI | 2987cc 165KW 224HP OM 642.960 | RWD — W204 | 2009-2014 |
| Mercedes-Benz | C-Class | Diesel Saloon | C 350 CDI 4-matic | 2987cc 165KW 224HP OM 642.961 | AWD — W204 | 2009-2014 |
| Mercedes-Benz | CLK | Diesel Convertible | CLK 320 CDI | 2987cc 165KW 224HP OM 642.910 | RWD — A209 | 2005-2010 |
| Mercedes-Benz | CLK | Diesel Coupe | CLK 320 CDI | 2987cc 165KW 224HP OM 642.910 | RWD — C209 | 2005-2009 |
| Mercedes-Benz | CLS | Diesel Coupe | CLS 320 CDI | 2987cc 165KW 224HP OM 642.920 | RWD — C219 | 2005-2010 |
| Mercedes-Benz | CLS | Diesel Coupe | CLS 350 CDI | 2987cc 165KW 224HP OM 642.920 | RWD — C219 | 2009-2010 |
| Mercedes-Benz | E-Class | Diesel Chassis Cab | E 280 CDI | 2987cc 140KW 190HP OM 642.920 | RWD — VF211 | 2005-2009 |
| Mercedes-Benz | E-Class | Diesel Estate | E 280 T CDI | 2987cc 140KW 190HP OM 642.920 | RWD — S211 | 2005-2009 |
| Mercedes-Benz | E-Class | Diesel Estate | E 280 T CDI 4-matic | 2987cc 140KW 190HP OM 642.921 | AWD — S211 | 2005-2009 |
| Mercedes-Benz | E-Class | Diesel Estate | E 320 T CDI | 2987cc 155KW 211HP OM 642.920 | RWD — S211 | 2007-2009 |
| Mercedes-Benz | E-Class | Diesel Estate | E 320 T CDI | 2987cc 165KW 224HP OM 642.920 | RWD — S211 | 2005-2009 |
| Mercedes-Benz | E-Class | Diesel Estate | E 320 T CDI 4-matic | 2987cc 165KW 224HP OM 642.921 | AWD — S211 | 2005-2009 |
| Mercedes-Benz | E-Class | Diesel Saloon | E 280 CDI | 2987cc 140KW 190HP OM 642.920 | RWD — W211 | 2005-2008 |
| Mercedes-Benz | E-Class | Diesel Saloon | E 280 CDI 4-matic | 2987cc 140KW 190HP OM 642.921 | AWD — W211 | 2005-2008 |
| Mercedes-Benz | E-Class | Diesel Saloon | E 300 BlueTEC | 2987cc 155KW 211HP OM 642.920 | RWD — W211 | 2007-2008 |
| Mercedes-Benz | E-Class | Diesel Saloon | E 320 CDI | 2987cc 165KW 224HP OM 642.920 | RWD — W211 | 2005-2008 |
| Mercedes-Benz | E-Class | Diesel Saloon | E 320 CDI 4-matic | 2987cc 165KW 224HP OM 642.910;OM 642.921 | AWD — W211 | 2005-2008 |
| Mercedes-Benz | G-Class | Diesel Off-Road Vehicle | G 280 CDI | 2987cc 135KW 184HP OM 642.884;OM 642.975 | AWD — W461 | 2009-2024 |
| Mercedes-Benz | G-Class | Diesel Off-Road Vehicle | G 300 CDI | 2987cc 135KW 184HP OM 642.884 | AWD — W461 | 2010-2023 |
| Mercedes-Benz | GL-Class | Diesel SUV | GL 320 CDI 4-matic | 2987cc 165KW 224HP OM 642.940 | AWD — X164 | 2006-2009 |
| Mercedes-Benz | GL-Class | Diesel SUV | GL 350 CDI 4-matic | 2987cc 165KW 224HP OM 642.940 | AWD — X164 | 2009-2012 |
| Mercedes-Benz | GLK-Class | Diesel SUV | 320 CDI 4-matic | 2987cc 165KW 224HP OM 642.961 | AWD — X204 | 2008-2015 |
| Mercedes-Benz | M-Class | Diesel SUV | ML 280 CDI 4-matic | 2987cc 140KW 190HP OM 642.940 | AWD — W164 | 2005-2009 |
| Mercedes-Benz | M-Class | Diesel SUV | ML 300 CDI 4-matic | 2987cc 140KW 190HP OM 642.940 | AWD — W164 | 2009-2011 |
| Mercedes-Benz | M-Class | Diesel SUV | ML 320 CDI 4-matic | 2987cc 165KW 224HP OM 642.940 | AWD — W164 | 2005-2009 |
| Mercedes-Benz | M-Class | Diesel SUV | ML 350 CDI 4-matic | 2987cc 165KW 224HP OM 642.940 | AWD — W164 | 2009-2011 |
| Mercedes-Benz | R-Class | Diesel MPV | R 280 CDI | 2987cc 140KW 190HP OM 642.870;OM 642.872;OM 642.950 | RWD — W251,V251 | 2006-2012 |
| Mercedes-Benz | R-Class | Diesel MPV | R 280 CDI 4-matic | 2987cc 140KW 190HP OM 642.950 | AWD — W251,V251 | 2006-2012 |
| Mercedes-Benz | R-Class | Diesel MPV | R 300 CDI | 2987cc 140KW 190HP OM 642.870;OM 642.872;OM 642.950 | RWD — W251,V251 | 2009-2012 |
| Mercedes-Benz | R-Class | Diesel MPV | R 300 CDI 4-matic | 2987cc 140KW 190HP OM 642.950 | AWD — W251,V251 | 2009-2012 |
| Mercedes-Benz | R-Class | Diesel MPV | R 320 CDI 4-matic | 2987cc 165KW 224HP OM 642.950 | AWD — W251,V251 | 2006-2010 |
| Mercedes-Benz | R-Class | Diesel MPV | R 350 CDI 4-matic | 2987cc 165KW 224HP OM 642.950 | AWD — W251,V251 | 2009-2012 |
| Mercedes-Benz | S-Class | Diesel Saloon | S 320 CDI | 2987cc 155KW 211HP OM 642.930 | RWD — W221 | 2005-2013 |
| Mercedes-Benz | S-Class | Diesel Saloon | S 320 CDI | 2987cc 173KW 235HP OM 642.930 | RWD — W221 | 2005-2009 |
| Mercedes-Benz | S-Class | Diesel Saloon | S 320 CDI 4-matic | 2987cc 155KW 211HP OM 642.932 | AWD — W221 | 2005-2013 |
| Mercedes-Benz | S-Class | Diesel Saloon | S 320 CDI 4-matic | 2987cc 173KW 235HP OM 642.932 | AWD — W221 | 2006-2013 |
| Mercedes-Benz | S-Class | Diesel Saloon | S 350 CDI | 2987cc 155KW 211HP OM 642.930 | RWD — W221 | 2009-2013 |
| Mercedes-Benz | S-Class | Diesel Saloon | S 350 CDI | 2987cc 173KW 235HP OM 642.930 | RWD — W221 | 2009-2013 |
| Mercedes-Benz | S-Class | Diesel Saloon | S 350 CDI 4-matic | 2987cc 155KW 211HP OM 642.932 | AWD — W221 | 2009-2010 |
| Mercedes-Benz | Sprinter 3-T | Diesel Chassis Cab | 218 CDI | 2987cc 135KW 184HP OM 642.896;OM 642.992;OM 642.993 | RWD — B906 | 2006-2009 |
| Mercedes-Benz | Sprinter 3-T | Diesel Chassis Cab | 219 CDI / BlueTEC | 2987cc 140KW 190HP OM 642.896;OM 642.992 | RWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 3-T | Diesel Van | 218 CDI | 2987cc 135KW 184HP OM 642.896;OM 642.992 | RWD — B906 | 2006-2009 |
| Mercedes-Benz | Sprinter 3-T | Diesel Van | 219 CDI / BlueTEC | 2987cc 140KW 190HP OM 642.896;OM 642.992 | RWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Bus | 318 CDI | 2987cc 135KW 184HP OM 642.896;OM 642.986;OM 642.992;OM 642.993 | RWD — B906 | 2008-2009 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Bus | 318 CDI 4×4 | 2987cc 135KW 184HP OM 642.896;OM 642.986;OM 642.992;OM 642.993 | AWD — B906 | 2008-2009 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Bus | 319 CDI | 2987cc 140KW 190HP OM 642.899 | RWD — B907 | 2018-2024 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Bus | 319 CDI / BlueTEC | 2987cc 140KW 190HP OM 642.896;OM 642.898;OM 642.986;OM 642.992 | RWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Bus | 319 CDI / BlueTEC 4×4 | 2987cc 140KW 190HP OM 642.896;OM 642.898;OM 642.986;OM 642.992 | AWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Bus | 319 CDI All-wheel Drive | 2987cc 140KW 190HP OM 642.899 | AWD — B907 | 2019-2024 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Chassis Cab | 318 CDI (906.131, 906.133, 906.135, 906.231, 906.233,… | 2987cc 135KW 184HP OM 642.896;OM 642.992;OM 642.993 | RWD — B906 | 2006-2009 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Chassis Cab | 318 CDI 4×4 (906.131, 906.133, 906.135, 906.231, 906.233… | 2987cc 135KW 184HP OM 642.896;OM 642.992;OM 642.993 | AWD — B906 | 2008-2009 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Chassis Cab | 319 CDI / BlueTEC (906.131, 906.133, 906.135, 906.231,… | 2987cc 140KW 190HP OM 642.896;OM 642.898;OM 642.992 | RWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Chassis Cab | 319 CDI / BlueTEC 4×4 (906.131, 906.133, 906.135,… | 2987cc 140KW 190HP OM 642.896;OM 642.898;OM 642.992 | AWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Chassis Cab | 319 CDI All-wheel Drive | 2987cc 140KW 190HP OM 642.899 | AWD — B907,B910 | 2019-2024 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Chassis Cab | 319 CDI RWD | 2987cc 140KW 190HP OM 642.899 | RWD — B907,B910 | 2018-2024 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Van | 318 CDI | 2987cc 135KW 184HP OM 642.896;OM 642.986;OM 642.992;OM 642.993 | RWD — B906 | 2006-2009 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Van | 318 CDI 4×4 | 2987cc 135KW 184HP OM 642.896;OM 642.986;OM 642.992;OM 642.993 | AWD — B906 | 2008-2009 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Van | 319 CDI / BlueTEC | 2987cc 140KW 190HP OM 642.896;OM 642.898;OM 642.986;OM 642.992 | RWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Van | 319 CDI / BlueTEC 4×4 (906.631, 906.633, 906.635,… | 2987cc 140KW 190HP OM 642.896;OM 642.898;OM 642.986;OM 642.992 | AWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Van | 319 CDI All-wheel Drive | 2987cc 140KW 190HP OM 642.899 | AWD — B907,B910 | 2019-2024 |
| Mercedes-Benz | Sprinter 3.5-T | Diesel Van | 319 CDI RWD | 2987cc 140KW 190HP OM 642.899 | RWD — B907,B910 | 2018-2024 |
| Mercedes-Benz | Sprinter 4-T | Diesel Bus | 419 CDI | 2987cc 140KW 190HP OM 642.899 | RWD — B907 | 2018-2024 |
| Mercedes-Benz | Sprinter 4-T | Diesel Chassis Cab | 419 CDI All-wheel Drive (907.143, 907.145, 907.243,… | 2987cc 140KW 190HP OM 642.899 | AWD — B907,B910 | 2019-2024 |
| Mercedes-Benz | Sprinter 4-T | Diesel Chassis Cab | 419 CDI RWD | 2987cc 140KW 190HP OM 642.899 | RWD — B907,B910 | 2018-2024 |
| Mercedes-Benz | Sprinter 4-T | Diesel Van | 419 CDI All-wheel Drive | 2987cc 140KW 190HP OM 642.899 | AWD — B907,B910 | 2019-2024 |
| Mercedes-Benz | Sprinter 4-T | Diesel Van | 419 CDI RWD | 2987cc 140KW 190HP OM 642.899 | RWD — B907,B910 | 2018-2024 |
| Mercedes-Benz | Sprinter 4.6-T | Diesel Chassis Cab | 418 CDI | 2987cc 135KW 184HP OM 642.896;OM 642.986;OM 642.992;OM 642.993 | RWD — B906 | 2006-2009 |
| Mercedes-Benz | Sprinter 4.6-T | Diesel Chassis Cab | 419 CDI | 2987cc 140KW 190HP OM 642.896;OM 642.898;OM 642.986;OM 642.992 | RWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 4.6-T | Diesel Van | 418 CDI | 2987cc 135KW 184HP OM 642.896;OM 642.986;OM 642.992 | RWD — B906 | 2009-2016 |
| Mercedes-Benz | Sprinter 4.6-T | Diesel Van | 419 CDI | 2987cc 140KW 190HP OM 642.896;OM 642.992 | RWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 5-T | Diesel Bus | 513 CDI | 2143cc 95KW 129HP OM 651.955 | RWD — B906 | 2009-2016 |
| Mercedes-Benz | Sprinter 5-T | Diesel Chassis Cab | 518 CDI | 2987cc 135KW 184HP OM 642.896;OM 642.986;OM 642.992;OM 642.993 | RWD — B906 | 2006-2009 |
| Mercedes-Benz | Sprinter 5-T | Diesel Chassis Cab | 518 CDI 4×4 | 2987cc 135KW 184HP OM 642.896;OM 642.986;OM 642.992;OM 642.993 | AWD — B906 | 2006-2009 |
| Mercedes-Benz | Sprinter 5-T | Diesel Chassis Cab | 519 CDI | 2987cc 140KW 190HP OM 642.899 | RWD — B907 | 2018-2024 |
| Mercedes-Benz | Sprinter 5-T | Diesel Chassis Cab | 519 CDI / BlueTEC | 2987cc 140KW 190HP OM 642.896;OM 642.898;OM 642.986;OM 642.992 | RWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 5-T | Diesel Chassis Cab | 519 CDI / BlueTEC 4×4 (906.153, 906.155, 906.253,… | 2987cc 140KW 190HP OM 642.896;OM 642.898;OM 642.986;OM 642.992 | AWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 5-T | Diesel Chassis Cab | 519 CDI All-wheel Drive (907.153, 907.155, 907.253,… | 2987cc 140KW 190HP OM 642.899 | AWD — B907 | 2019-2024 |
| Mercedes-Benz | Sprinter 5-T | Diesel Van | 518 CDI | 2987cc 135KW 184HP OM 642.896;OM 642.986;OM 642.992;OM 642.993 | RWD — B906 | 2006-2009 |
| Mercedes-Benz | Sprinter 5-T | Diesel Van | 518 CDI 4×4 | 2987cc 135KW 184HP OM 642.896;OM 642.986;OM 642.992;OM 642.993 | AWD — B906 | 2006-2016 |
| Mercedes-Benz | Sprinter 5-T | Diesel Van | 519 CDI | 2987cc 140KW 190HP OM 642.899 | RWD — B907 | 2018-2024 |
| Mercedes-Benz | Sprinter 5-T | Diesel Van | 519 CDI / BlueTEC | 2987cc 140KW 190HP OM 642.896;OM 642.898;OM 642.986;OM 642.992 | RWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 5-T | Diesel Van | 519 CDI / BlueTEC 4×4 | 2987cc 140KW 190HP OM 642.896;OM 642.898;OM 642.986;OM 642.992 | AWD — B906 | 2009-2018 |
| Mercedes-Benz | Sprinter 5-T | Diesel Van | 519 CDI All-wheel Drive | 2987cc 140KW 190HP OM 642.899 | AWD — B907 | 2019-2024 |
| Mercedes-Benz | Viano | Diesel Bus | CDI 3.0 | 2987cc 150KW 204HP OM 642.990 | RWD — W639 | 2006-2024 |
| Mercedes-Benz | Viano | Diesel Bus | CDI 3.0 | 2987cc 165KW 224HP OM 642.890 | RWD — W639 | 2010-2024 |
| Mercedes-Benz | Vito | Diesel Bus | 120 CDI | 2987cc 150KW 204HP OM 642.990 | RWD — W639 | 2006-2024 |
| Mercedes-Benz | Vito / Mixto | Diesel Van | 120 CDI | 2987cc 150KW 204HP OM 642.990 | RWD — W639 | 2006-2024 |
| Make | Model | Variant | Type | Engine | Chassis | Year |
Our SKU: TMA6429002800_313
All our Glow Plug Control Relay A6429001402 are OEM quality and reliable after market car parts. This Glow Plug Control Relay A6429001402 is specifically compatible with Chrysler: 300C, Jeep: Grand Cherokee, Mercedes-Benz: C-Class, CLK, CLS, E-Class, G-Class, GL-Class, GLK-Class, M-Class, R-Class, S-Class, Sprinter 3-T, Sprinter 3.5-T, Sprinter 4-T, Sprinter 4.6-T, Sprinter 5-T, Viano, Vito, Vito / Mixto, .
Please use our make-model-year tool to check this part’s compatibility with your vehicle. However, please note that our tool is for reference only and we recommend that you check the part number on your old unit prior to purchasing.
If you are still not sure about the compatibility of this part to your vehicle, please supply us with the VIN number or Reg number in our live chat or contact form! You can also find details on our purchasing & shipping guide here.
Key Benefits
Accurate Glow Plug Power Control
This relay regulates the electrical current sent to the glow plugs based on signals from the engine control unit, helping ensure effective pre-heating for reliable engine starts.
Restores Cold Start Performance
By delivering precise power timing to glow plugs, this control relay helps reduce hard starts, extended cranking, and rough engine behaviour in low temperatures.
OEM Reference Fitment
Directly replaces the original Mercedes-Benz part A6429001402, providing a correct fit and compatibility with diesel engines that use this reference number.
Supports Emissions and Engine Efficiency
Proper glow plug operation helps improve combustion quality at start-up, which can reduce white smoke, improve fuel efficiency, and support lower emissions.
Durable and Reliable Construction
Designed to meet rigorous OE standards, the relay withstands typical under-hood conditions and delivers dependable performance over time.
Frequently Asked Questions (FAQs)
Q: What does a glow plug control relay do?
A: The glow plug control relay regulates the current to the glow plugs based on instructions from the vehicle’s ECU, ensuring proper heating during the pre-start phase so the diesel engine starts efficiently even in cold weather.
Q: What are common symptoms of a faulty glow plug relay?
A: Symptoms can include difficulty starting the engine, longer crank times, rough idle after start-up, increased white exhaust smoke, reduced fuel economy and glow plug warning lights on the dashboard.
Q: Which vehicles use OEM part A6429001402?
A: This relay is commonly fitted to Mercedes-Benz diesel engines such as the OM642 V6 and other CDI applications. Always verify compatibility with your vehicle’s VIN or existing part number before purchase.
Q: Is this a direct replacement part?
A: Yes. This glow plug control relay is engineered to match the OEM specification for part A6429001402, allowing direct installation in applications that require this reference.
Q: Does replacing the relay fix all glow plug issues?
A: Replacing the relay typically resolves issues caused by relay failure, but if glow plugs themselves or wiring are faulty, those components may also require inspection or replacement.
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