GL320 poor start

bembo449

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gainsborough , lincolnshire
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Mercedes Cl500, shitron dispatch
Had a GL320 in for MOT today , it had a funny starting quirk , hope you guys may share your thoughts on it , the car always starts but it displays an almost flat battery way of doing it , reminds me of when cars back in the day had poor live contact onto the starter motor , both batteries are good although ive not stuck the clamp meter on to check any drain , instinct makes me think its not a drain as it can happen when cold or literally 50 secs after the car was shut off , its very strange
 

Blobcat

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R171 SLK280, Smart R451, Land Rover 110 County SW, 997 C2S, R1250 GSA TE 40th, CBR600FP
Corroded battery cables? Water damaged and black inside?
 

ajlsl600

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france
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clk3202001,sl6002003 with everything regrettably sold ,A class 170cdi auto. NG/TF1800 ML250
Bad earth.,corroded,loose poorly. Crimped lugs would be where I check first,assumes batt good sometimes an internal batt connection is not impossible. Rotten cables, unlikely but these days cheaper materials.who knows
Iffy starter relay?
 

Doug1234

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1997 w210 e300td
Sounds like a battery that does not have enough amps , no clout left in it.
 

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